a12x
b12xb
c12xbk
d12x
e12xb
zr3xb
0r3xbk
1r3x
2r3xb
3r3xbk
oi4xbk
pi4x
qi4xb
ri4xbk
si4x
d94x
e94xb
f94xbk
g94x
h94xb
2z5xb
3z5xbk
4z5x
5z5xb
6z5xbk