z2br3
02br3d
12br
22br3
32br3d
otcr3d
ptcr
qtcr3
rtcr3d
stcr
dkdr
ekdr3
fkdr3d
gkdr
hkdr3
2aer3
3aer3d
4aer
5aer3
6aer3d
r1er3d
s1er
t1er3
u1er3d
v1er