u2un1v
v2un
w2un1
x2un1v
y2un
jtvn
ktvn1
ltvn1v
mtvn
ntvn1
8jwn1
9jwn1v
akwn
bkwn1
ckwn1v
xaxn1v
yaxn
zaxn1
0axn1v
1axn
m1xn
n1xn1
o1xn1v
p1xn
q1xn1