y2yi
z2yiy
02yiyz
12yi
22yiy
ntziy
otziyz
ptzi
qtziy
rtziyz
ck0iyz
dk0i
ek0iy
fk0iyz
gk0i
1a1i
2a1iy
3a1iyz
4a1i
5a1iy
q11iy
r11iyz
s11i
t11iy
u11iyz