z1pr2
01pr2a
11pr
21pr2
31pr2a
osqr2a
psqr
qsqr2
rsqr2a
ssqr
djrr
ejrr2
fjrr2a
gjrr
hjrr2
29rr2
39rr2a
49rr
59rr2
69rr2a
r0sr2a
s0sr
t0sr2
u0sr2a
v0sr