66
ED -> DE
FD -> DF
HDG -> DGH
IDG -> DGI
KDGJ -> DGJK
LDGJ -> DGJL
1DGJM -> DGJM1
GE -> EG
GF -> FG
JH -> HJ
JI -> IJ
MK -> KM
ML -> LM
DE -> BG
DF -> CG
GH -> EJ
GI -> FJ
JK -> HM
JL -> IM
M0 -> K
M1 -> L
0 -> DGJM0
1 -> DGJM1
NH -> EN
NI -> FN
OK -> EO
OL -> FO
PN -> NB
QN -> NC
N -> _
O -> _
BR -> RB
CR -> RC
BS -> SB
CS -> SC
RB -> P
RC -> A
SC -> Q
SB -> A
RE -> ER
RF -> FR
SE -> ES
SF -> FS
ER -> P
FR -> A
FS -> Q
ES -> A
RR -> P
SS -> Q
RS -> A
SR -> A
T -> _
BE -> RTR
BF -> STR
CE -> RTS
CF -> STS
PH -> PNNH
PI -> PNNI
QH -> QNNH
QI -> QNNI
PK -> PNOK
PL -> PNOL
QK -> QNOK
QL -> QNOL
P -> _
Q -> _