09prru
19pr
29prr
39prru
49pr
p0qr
q0qrr
r0qrru
s0qr
t0qrr
errrr
frrrru
grrr
hrrrr
irrrru
3hsrru
4hsr
5hsrr
6hsrru
7hsr
s8sr
t8srr
u8srru
v8sr
w8srr