str2
ttr2u
utr2un
vtr2
wtr2u
hks2u
iks2un
jks2
kks2u
lks2un
6at2un
7at2
8at2u
9at2un
abt2
v1t2
w1t2u
x1t2un
y1t2
z1t2u
ksu2u
lsu2un
msu2
nsu2u
osu2un