y1pt
z1pts
01ptse
11pt
21pts
nsqts
osqtse
psqt
qsqts
rsqtse
cjrtse
djrt
ejrts
fjrtse
gjrt
19rt
29rts
39rtse
49rt
59rts
q0sts
r0stse
s0st
t0sts
u0stse