lnand2
mnan
nnand
onand2
pnan
aebn
bebnd
cebnd2
debn
eebnd
z4bnd
04bnd2
14bn
24bnd
34bnd2
ovcnd2
pvcn
qvcnd
rvcnd2
svcn
dmdn
emdnd
fmdnd2
gmdn
hmdnd