31
Z0 -> Z
Z1 -> Z
0Z -> Z
1Z -> Z
0M -> M0
1M -> M1
0N -> N0
1N -> N1
0BM -> B
1BN -> B
BM -> Z
BN -> Z
H0 -> 0H
H1 -> 1H
HE -> C
D -> BH
C00 -> 00E
C01 -> 01E
C10 -> 10E
C11 -> 11E
C0 -> Z
C1 -> Z
0C -> MC
1C -> NC
BC -> _
B0 -> 0D
B1 -> 1D
1A -> A1
A -> BC
0 -> A0
11 -> _