2ndspos
s
N
cons
X
2ndspos
s
N
cons2
Z
2ndspos
s
N
cons2
cons
Y
rcons
posrecip
Y
2ndsneg
N
Z
2ndsneg
s
N
cons
X
2ndsneg
s
N
cons2
Z
2ndsneg
s
N
cons2
cons
Y
rcons
negrecip
Y
2ndspos
N
Z
from
X
cons
X
2ndspos
0
Z
rnil
2ndsneg
0
Z
rnil
pi
X
2ndspos
X
from
0
plus
0
Y
Y
plus
s
X
Y
s
plus
X
Y
times
0
Y
0
times
s
X
Y
plus
Y
times
X
Y
square
X
times
X
X
2.2
NaTT
certifiable-1.6