n2vn2
o2vn2s
p2vn
q2vn2
r2vn2s
ctwn2s
dtwn
etwn2
ftwn2s
gtwn
1jxn
2jxn2
3jxn2s
4jxn
5jxn2
qayn2
rayn2s
sayn
tayn2
uayn2s
f1yn2s
g1yn
h1yn2
i1yn2s
j1yn