axn2
bxn22
cxn22d
dxn2
exn22
zno22
0no22d
1no2
2no22
3no22d
oep22d
pep2
qep22
rep22d
sep2
d5p2
e5p22
f5p22d
g5p2
h5p22
2vq22
3vq22d
4vq2
5vq22
6vq22d