29rrt
39rrtf
49rr
59rrt
69rrtf
r0srtf
s0sr
t0srt
u0srtf
v0sr
grtr
hrtrt
irtrtf
jrtr
krtrt
5hurt
6hurtf
7hur
8hurt
9hurtf
u8urtf
v8ur
w8urt
x8urtf
y8ur