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0
0
a__dbl
s
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s
s
dbl
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a__dbls
nil
nil
a__dbls
cons
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Y
cons
dbl
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mark
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nil
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sel
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s
X
mark
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a__dbl
mark
X
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mark
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sel
X1
X2
a__sel
mark
X1
mark
X2
mark
indx
X1
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a__indx
mark
X1
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mark
from
X
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mark
0
0
mark
s
X
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X
mark
nil
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cons
X1
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cons
X1
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a__dbl
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sel
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indx
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X
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mark
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cons
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mark
indx
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sel
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mark
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mark
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indx
X1
X2
mark
X1
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sel
X1
X2
mark
X2
mark
dbls
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mark
X
a__sel
s
X
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Y
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1
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282
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2
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0
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a__indx
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indx
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15945
2
15944
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a__dbl
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1
130
a__dbls
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26285
0
0
48638
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2
10090
0
from
1
1
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nil
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a__dbl
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0
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cons
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0
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s
X
cons
Y
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mark
X
mark
Z
mark
cons
X1
X2
cons
X1
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a__dbls
cons
X
Y
cons
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X
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Y
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0
0
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cons
X
Y
Z
cons
sel
X
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Y
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a__dbl
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nil
nil
mark
s
X
s
X
a__sel
X1
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sel
X1
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X
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nil
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a__indx
X1
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indx
X1
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cons
X
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mark
X
mark
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X
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mark
X
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nil
X
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dbls
X
mark
from
X
a__from
X
mark
sel
X1
X2
a__sel
mark
X1
mark
X2
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X
from
X
mark
dbls
X
a__dbls
mark
X
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X
cons
X
from
s
X
mark
indx
X1
X2
a__indx
mark
X1
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s
X
cons
Y
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a__sel
mark
X
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Z
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X
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s
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X
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1
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1
indx
2
5
a__dbl
1
3
1
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1
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0
0
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6
from
1
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1
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0
0
a__dbl
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a__dbl
1
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1
1
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1
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0
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cons
2
1
9727
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0
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cons
X1
X2
cons
X1
X2
a__dbls
cons
X
Y
cons
dbl
X
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Y
mark
0
0
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cons
X
Y
Z
cons
sel
X
Z
indx
Y
Z
a__dbl
0
0
a__dbls
nil
nil
mark
s
X
s
X
a__sel
X1
X2
sel
X1
X2
a__dbl
X
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X
mark
nil
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a__indx
X1
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indx
X1
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0
cons
X
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mark
X
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X
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mark
X
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nil
X
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X
mark
from
X
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X
mark
sel
X1
X2
a__sel
mark
X1
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X2
a__from
X
from
X
mark
dbls
X
a__dbls
mark
X
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X
cons
X
from
s
X
mark
indx
X1
X2
a__indx
mark
X1
X2
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s
X
cons
Y
Z
a__sel
mark
X
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Z
a__dbl
s
X
s
s
dbl
X
mark
indx
X1
X2
a__indx
mark
X1
X2
false
mark
dbls
X
a__dbls
mark
X
false
mark
from
X
a__from
X
false
mark
dbl
X
a__dbl
mark
X
false
NaTT
certifiable-1.6