active
from
X
mark
cons
X
from
s
X
active
sel
0
cons
X
XS
mark
X
active
sel
s
N
cons
X
XS
mark
sel
N
XS
active
minus
X
0
mark
0
active
minus
s
X
s
Y
mark
minus
X
Y
active
quot
0
s
Y
mark
0
active
quot
s
X
s
Y
mark
s
quot
minus
X
Y
s
Y
active
zWquot
XS
nil
mark
nil
active
zWquot
nil
XS
mark
nil
active
zWquot
cons
X
XS
cons
Y
YS
mark
cons
quot
X
Y
zWquot
XS
YS
active
from
X
from
active
X
active
cons
X1
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cons
active
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s
X
s
active
X
active
sel
X1
X2
sel
active
X1
X2
active
sel
X1
X2
sel
X1
active
X2
active
minus
X1
X2
minus
active
X1
X2
active
minus
X1
X2
minus
X1
active
X2
active
quot
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active
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active
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from
X
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mark
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cons
X1
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mark
X
mark
s
X
sel
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X1
X2
mark
sel
X1
X2
sel
X1
mark
X2
mark
sel
X1
X2
minus
mark
X1
X2
mark
minus
X1
X2
minus
X1
mark
X2
mark
minus
X1
X2
quot
mark
X1
X2
mark
quot
X1
X2
quot
X1
mark
X2
mark
quot
X1
X2
zWquot
mark
X1
X2
mark
zWquot
X1
X2
zWquot
X1
mark
X2
mark
zWquot
X1
X2
proper
from
X
from
proper
X
proper
cons
X1
X2
cons
proper
X1
proper
X2
proper
s
X
s
proper
X
proper
sel
X1
X2
sel
proper
X1
proper
X2
proper
0
ok
0
proper
minus
X1
X2
minus
proper
X1
proper
X2
proper
quot
X1
X2
quot
proper
X1
proper
X2
proper
zWquot
X1
X2
zWquot
proper
X1
proper
X2
proper
nil
ok
nil
from
ok
X
ok
from
X
cons
ok
X1
ok
X2
ok
cons
X1
X2
s
ok
X
ok
s
X
sel
ok
X1
ok
X2
ok
sel
X1
X2
minus
ok
X1
ok
X2
ok
minus
X1
X2
quot
ok
X1
ok
X2
ok
quot
X1
X2
zWquot
ok
X1
ok
X2
ok
zWquot
X1
X2
top
mark
X
top
proper
X
top
ok
X
top
active
X
active
1
from
1
mark
1
cons
2
s
1
sel
2
0
0
minus
2
quot
2
zWquot
2
nil
0
proper
1
ok
1
top
1
FULL
./TRS/TRCSR/Ex4_7_37_Bor03_C.trs