2nd
cons
X
n__cons
Y
Z
activate
Y
from
X
cons
X
n__from
s
X
cons
X1
X2
n__cons
X1
X2
from
X
n__from
X
activate
n__cons
X1
X2
cons
X1
X2
activate
n__from
X
from
X
activate
X
X
2.2
activate
n__from
X
from
X
activate
n__cons
X1
X2
cons
X1
X2
from
X
cons
X
n__from
s
X
2nd
cons
X
n__cons
Y
Z
activate
Y
true
2nd
cons
X
n__cons
Y
Z
activate
Y
false
activate
n__cons
X1
X2
cons
X1
X2
false
activate
n__from
X
from
X
false
from
X
cons
X
n__from
s
X
false
NaTT
certifiable-1.6