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I'm now a bit lost as to what your after.
Attached is my Bow Tie - which I think does the job - I've used the cross/hhv combination not hold.
There needs to be a bit of work in setting the scan lengths. I've guessed at what might be appropriate ie 20 days = maMedium in my code.
My scan picks up ABC on the ASX. I'm assuming you'll make this a buy when it closes above 0.55 again. ie closes above the high before the current pullback - and this is my assumption of the type of stock your after.
Geoff
----- Original Message -----
From: David Holzgrefe
To: amibroker@xxxxxxxxxxxxxxx
Sent: Monday, May 14, 2001 9:44 PM
Subject: Re: [amibroker] Bow Tie
Thanks TJ just when I think I got the formula right ..
could a few of the ami users have a look at it and see if it displays as per the theory :
I checked it against a few quickly but im a bit cross eyed at the moment from starring at code ....
TJ I'll have play with you easy version tomorrow :))))
thanks again David
----- Original Message -----
From: Tomasz Janeczko
To: amibroker@xxxxxxxxxxxxxxx
Sent: Monday, May 14, 2001 9:11 PM
Subject: Re: [amibroker] Bow Tie
Hello David,
I looked at your formula at here is my comment:
cond1=cross (ma(close, 10 ),ema (close, 30));
cond2=ref(cross (ma(close, 10 ),ema (close, 30)),-1)>0;
cond3=ref(cross (ma(close, 10 ),ema (close, 30)),-2)>0;
cond4=ref(cross (ma(close, 10 ),ema (close, 30)),-3)>0;
cond5=ref(cross (ma(close, 10 ),ema (close, 30)),-4)>0;
cond6=ref(cross (ma(close, 10 ),ema (close, 30)),-5)>0;
cond7=ref(cross (ma(close, 10 ),ema (close, 30)),-6)>0;
cond8=ref(cross (ma(close, 10 ),ema (close, 30)),-7)>0;
cond9=ref(cross (ma(close, 10 ),ema (close, 30)),-8)>0;
cond10=ref(cross (ma(close, 10 ),ema (close, 30)),-9)>0;
condtrue=cond1 or cond2 or cond3 or cond4 or cond5 or cond6 and cond7 and cond8 and cond9;
All above statements could be replaced by a single:
condtrue = hold( cross( ma( close, 10 ), ema( close, 30 ) ), 10 );
There is no need for a magic with "reseting" back to false.
Best regards,
Tomasz Janeczko
----- Original Message -----
From: David Holzgrefe
To: amibroker@xxxxxxxxxxxxxxx
Sent: 14 May, 2001 11:58
Subject: Re: [amibroker] Bow Tie
so what i realy need is a way cancel the true if the condition becomes false
iff var0<1 then var1 = 0 ; ???
or something similar
----- Original Message -----
From: Tomasz Janeczko
To: amibroker@xxxxxxxxxxxxxxx
Sent: Monday, May 14, 2001 7:21 PM
Subject: Re: [amibroker] Bow Tie
Hi,
In fact Steve's solution:
var0 = cross (ma(close, 10 ),ema (close, 30) ) ;
var1 = IIF(HHV(var0,-10) = 1,1,0) ;
is equivalent to
var1 = Hold( var0, 10 );
so var1 remains true if at least one "true" signal occured within previous 10 bars.
Best regards,
Tomasz Janeczko
----- Original Message -----
From: Geoff Mulhall
To: amibroker@xxxxxxxxxxxxxxx
Sent: 14 May, 2001 10:06
Subject: [amibroker] Bow Tie
David,
I think Steve's second email is a good solution using Cross in conjunction with HHV - it allows you to look backward in time.
I'll continue to play around as this scan it something I will use.
Tomasz,
Can you please confirm that the Hold condition sets the array to 1 forward in time the specified number of slots in the hold result array from the first position where it was set to 1 (ie true) ?
Thanks,
Geoff
----- Original Message -----
From: David Holzgrefe
To: amibroker@xxxxxxxxxxxxxxx
Sent: Monday, May 14, 2001 10:07 AM
Subject: Re: [amibroker] ref
ok I'm concerned that if the condition changes ami will still hold it true
even though it is now false using the hold()
."This true result is held true over the number of periods specified even if
a "false" result is generated. "
I don't wish to extend the condition forcing a false signal.
What I wanted was if condition x is meet then as long as its true look for
the next condition .
I guess you can see the intent in the bow tie formula.
has the ma10,ma20 ,ma30 crossed in the last xn days
if yes
has the pull back occurred
if yes
has the higher high occurred
if all 3 conditions are true then signal a buy
Geoff's multi condition does it but was looking for a cleaned way to
express it .
Maybe i just have to nest a bunch of conditions and if there true nest
another.
DOES THIS MAKE sense to anyone or is my logic out of sync
/* Bow Tie conditions - Short term moving average has crossed the long term
moving average sometime in the last xn days - Add more conditions for more
days */
cond1=cross (ma(close, 10 ),ema (close, 30));
cond2=ref(cross (ma(close, 10 ),ema (close, 30)),-1)>0;
cond3=ref(cross (ma(close, 10 ),ema (close, 30)),-2)>0;
cond4=ref(cross (ma(close, 10 ),ema (close, 30)),-3)>0;
cond5=ref(cross (ma(close, 10 ),ema (close, 30)),-4)>0;
cond6=ref(cross (ma(close, 10 ),ema (close, 30)),-5)>0;
cond7=ref(cross (ma(close, 10 ),ema (close, 30)),-6)>0;
cond8=ref(cross (ma(close, 10 ),ema (close, 30)),-7)>0;
cond9=ref(cross (ma(close, 10 ),ema (close, 30)),-8)>0;
cond10=ref(cross (ma(close, 10 ),ema (close, 30)),-9)>0;
SYNTAX hold( EXPRESSION, periods )
RETURNS ARRAY
FUNCTION Extends a "true" result of EXPRESSION for the specified number of
periods. This true result is held true over the number of periods specified
even if a "false" result is generated.
EXAMPLE hold( cross(rsi(14),70),5 )
----- Original Message -----
From: "Steve Wiser" <slwiserr@xxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, May 13, 2001 8:31 PM
Subject: Re: [amibroker] ref
> David:
>
> Check out the function "Hold". I think this will do what youare asking.
>
> Steve
>
>
> HOLD:
>
> SYNTAX hold( EXPRESSION, periods ) RETURNS ARRAY FUNCTION
>
> Extends a "true" result of EXPRESSION for the specified number of periods.
>
> This true result is held true over the number of periods specified even if
> a "false" result is generated.
>
> EXAMPLE hold( cross(rsi(14),70),5 )
>
>
> At 08:29 PM 5/13/01 +1000, you wrote:
> >TJ is there a way for ami to look for a condition true over xn periods
> >
> >eg
> >
> >ref(cross (ma(close, 10 ),ema (close, 30)),-10)>0;
> >
> >so that ami look for the true condition over the last 10 periods
> >no just 10 periods ago ?
> >
> >may have asked this before
> >
> >
> >Thanks David
> >
> >Your use of Yahoo! Groups is subject to the
> ><http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service.
>
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
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<DIV><FONT face=Arial size=2>David,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'm now a bit lost as to what your
after.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Attached is my Bow Tie - which I think does the job
- I've used the cross/hhv combination not hold.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>There needs to be a bit of work in settingthe scan
lengths. I've guessed at what might be appropriate ie 20 days = maMedium in my
code.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>My scan picks up ABC on the ASX. I'm assuming
you'll make this a buy when it closes above 0.55 again. ie closes
above the high before the current pull back - and this is my assumption of the
type of stock your after.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Geoff </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=dtholz@xxxx href="mailto:dtholz@xxxx";>David
Holzgrefe</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=amibroker@xxxxxxxxxx
href="mailto:amibroker@xxxxxxxxxxxxxxx";>amibroker@xxxxxxxxxxxxxxx</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 14, 2001 9:44 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [amibroker] Bow Tie</DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT><BR></DIV>
<DIV><FONT face=Arial size=2>Thanks TJ just when I think I got the formula
right ..</FONT></DIV>
<DIV><FONT face=Arial size=2>could a few of the ami users have a lookat it
and see if it displays as per the theory :</FONT></DIV>
<DIV><FONT face=Arial size=2>I checked it against a few quickly but im a bit
cross eyed at the moment from starring at code ....</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>TJ I'll have play with you easy version tomorrow
:))))</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>thanks again David</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
Tomasz Janeczko
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=amibroker@xxxxxxxxxxxx
href="mailto:amibroker@xxxxxxxxxxxxxxx";>amibroker@xxxxxxxxxxxxxxx</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 14, 2001 9:11
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [amibroker] Bow Tie</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Hello David,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I looked at your formula at here is my
comment:</FONT></DIV>
<DIV>
<DIV> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV><FONT color=#0000ff>cond1=cross (ma(close, 10 ),ema (close,
30));<BR>cond2=ref(cross (ma(close, 10 ),ema (close,
30)),-1)>0;<BR>cond3=ref(cross (ma(close, 10 ),ema (close,
30)),-2)>0;<BR>cond4=ref(cross (ma(close, 10 ),ema (close,
30)),-3)>0;<BR>cond5=ref(cross (ma(close, 10 ),ema (close,
30)),-4)>0;<BR>cond6=ref(cross (ma(close, 10 ),ema (close,
30)),-5)>0;<BR>cond7=ref(cross (ma(close, 10 ),ema (close,
30)),-6)>0;<BR>cond8=ref(cross (ma(close, 10 ),ema (close,
30)),-7)>0;<BR>cond9=ref(cross (ma(close, 10 ),ema (close,
30)),-8)>0;<BR>cond10=ref(cross (ma(close, 10 ),ema (close,
30)),-9)>0;</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><FONT color=#0000ff>condtrue=cond1 or cond2 or cond3 or cond4 or
cond5 or cond6 and cond7 and cond8 and cond9;</FONT></DIV></BLOCKQUOTE>
<DIV><FONT face=Arial size=2>All above statements could be replacedby a
single:</FONT></DIV>
<DIV><FONT face=Arial size=2>condtrue = hold( cross( ma( close, 10 ), ema(
close, 30 ) ), 10 );</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>There is no need for a magic with
"reseting" back to false.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Best regards,</FONT></DIV>
<DIV><FONT face=Arial size=2>Tomasz Janeczko</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=dtholz@xxxx href="mailto:dtholz@xxxx";>David
Holzgrefe</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=amibroker@xxxxxxxxxxxxxxx
href="mailto:amibroker@xxxxxxxxxxxxxxx";>amibroker@xxxxxxxxxxxxxxx</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> 14 May, 2001 11:58</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [amibroker] Bow
Tie</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>so what i realy need is a way cancelthe true
if the condition becomes false</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>iff var0<1 then var1 = 0 ;
???</FONT></DIV>
<DIV><FONT face=Arial size=2>or something similar </FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=tj@xxxx href="mailto:tj@xxxx";>Tomasz
Janeczko</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=amibroker@xxxxxxxxxxxxxxx
href="mailto:amibroker@xxxxxxxxxxxxxxx";>amibroker@xxxxxxxxxxxxxxx</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 14, 2001 7:21
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [amibroker] Bow
Tie</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Hi,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>In fact Steve's solution:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>var0 = cross (ma(close, 10 ),ema (close, 30) ) ;<BR>var1 =
IIF(HHV(var0,-10) = 1,1,0) ;<BR></DIV>
<DIV><FONT face=Arial size=2>is equivalent to</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>var1 = Hold( var0, 10 );</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>so var1 remains true if at least
one "true" signal occured within previous 10
bars. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Best regards,</FONT></DIV>
<DIV><FONT face=Arial size=2>Tomasz Janeczko</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=gmulhall@xxxx
href="mailto:gmulhall@xxxx";>Geoff Mulhall</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=amibroker@xxxxxxxxxxxxxxx
href="mailto:amibroker@xxxxxxxxxxxxxxx";>amibroker@xxxxxx</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> 14 May, 2001 10:06</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [amibroker] Bow
Tie</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>David,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I think Steve's second email is a
good solution using Cross in conjunction with HHV - it
allows you to look backward in time. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'll continue to play around as this scan
it something I will use.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Tomasz,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Can you please confirm that the Hold
condition sets the array to 1 <U>forward</U> in time the
specified number of slots in the hold result array from the first
position where it was set to 1 (ie true) ?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Geoff</FONT> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px;BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=dtholz@xxxx
href="mailto:dtholz@xxxx";>David Holzgrefe</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=amibroker@xxxxxxxxxxxxxxx
href="mailto:amibroker@xxxxxxxxxxxxxxx";>amibroker@xxxxxxxx</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 14, 2001
10:07 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [amibroker]ref
</DIV>
<DIV><BR></DIV><TT>ok I'm concerned that if the condition changes
ami will still hold it true<BR>even though it is now false using the
hold()<BR>."This true result is held true over the number of periods
specified even if<BR>a "false" result is generated. "<BR><BR><BR>I
don't wish to extend the condition forcing a false signal.<BR>What I
wanted was if condition x is meet then as long as its true look
for<BR>the next condition .<BR>I guess you can see the intent in the
bow tie formula.<BR><BR>has the ma10,ma20 ,ma30 crossed in the last
xn days<BR>if yes<BR>has the pull back occurred<BR>if yes<BR>has the
higher high occurred<BR>if all 3 conditions are true then signal a
buy<BR><BR>Geoff's multi condition does it but was looking for
a cleaned way to<BR>express it .<BR>Maybe i just have to nest a
bunch of conditions and if there true nest<BR>another.<BR><BR>DOES
THIS MAKE sense to anyone or is my logic out of sync<BR><BR>/* Bow
Tie conditions - Short term moving average has crossed the long
term<BR>moving average sometime in the last xn days - Add more
conditions for more<BR>days */<BR><BR>cond1=cross (ma(close, 10
),ema (close, 30));<BR>cond2=ref(cross (ma(close, 10 ),ema (close,
30)),-1)>0;<BR>cond3=ref(cross (ma(close, 10 ),ema (close,
30)),-2)>0;<BR>cond4=ref(cross (ma(close, 10 ),ema (close,
30)),-3)>0;<BR>cond5=ref(cross (ma(close, 10 ),ema (close,
30)),-4)>0;<BR>cond6=ref(cross (ma(close, 10 ),ema (close,
30)),-5)>0;<BR>cond7=ref(cross (ma(close, 10 ),ema (close,
30)),-6)>0;<BR>cond8=ref(cross (ma(close, 10 ),ema (close,
30)),-7)>0;<BR>cond9=ref(cross (ma(close, 10 ),ema (close,
30)),-8)>0;<BR>cond10=ref(cross (ma(close, 10 ),ema (close,
30)),-9)>0;<BR><BR><BR>SYNTAX hold( EXPRESSION, periods
)<BR>RETURNS ARRAY<BR>FUNCTION Extends a "true" result
of EXPRESSION for the specified number of<BR>periods. This true
result is held true over the number of periods specified<BR>even if
a "false" result is generated.<BR>EXAMPLE hold( cross(rsi(14),70),5
)<BR><BR>----- Original Message -----<BR>From: "Steve Wiser"
<slwiserr@xxxx><BR>To:
<amibroker@xxxxxxxxxxxxxxx><BR>Sent: Sunday, May 13, 20018:31
PM<BR>Subject: Re: [amibroker] ref<BR><BR><BR>>
David:<BR>><BR>> Check out the function "Hold". I think
this will do what you are asking.<BR>><BR>>
Steve<BR>><BR>><BR>> HOLD:<BR>><BR>> SYNTAX hold(
EXPRESSION, periods ) RETURNS ARRAY FUNCTION<BR>><BR>> Extends
a "true" result of EXPRESSION for the specified number of
periods.<BR>><BR>> This true result is held true over the
number of periods specified even if<BR>> a "false" result is
generated.<BR>><BR>> EXAMPLE hold( cross(rsi(14),70),5
)<BR>><BR>><BR>> At 08:29 PM 5/13/01 +1000, you
wrote:<BR>> >TJ is there a way for ami to look for a condition
true over xn periods<BR>> ><BR>> >eg<BR>>
><BR>> >ref(cross (ma(close, 10 ),ema (close,
30)),-10)>0;<BR>> ><BR>> >so that ami look for the
true condition over the last 10 periods<BR>> >no just 10
periods ago ?<BR>> ><BR>> >may have asked this
before<BR>> ><BR>> ><BR>> >Thanks David<BR>>
><BR>> >Your use of Yahoo! Groups is subject to the<BR>>
><<A
href="http://docs.yahoo.com/info/terms/";>http://docs.yahoo.com/info/terms/</A>>Yahoo!
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