input.txt

NBOKHVHOSVKSSBSVVBCS

SN -> H
KP -> O
CP -> V
FN -> P
FV -> S
HO -> S
NS -> N
OP -> C
HC -> S
NP -> B
CF -> V
NN -> O
OS -> F
VO -> V
HK -> N
SV -> V
VC -> V
PH -> K
NH -> O
SB -> N
KS -> V
CB -> H
SS -> P
SP -> H
VN -> K
VP -> O
SK -> V
VF -> C
VV -> B
SF -> K
HH -> K
PV -> V
SO -> H
NK -> P
NO -> C
ON -> S
PB -> K
VS -> H
SC -> P
HS -> P
BS -> P
CS -> P
VB -> V
BP -> K
FH -> O
OF -> F
HF -> F
FS -> C
BN -> O
NC -> F
FC -> B
CV -> V
HN -> C
KF -> K
OO -> P
CC -> S
FF -> C
BC -> P
PP -> F
KO -> V
PC -> B
HB -> H
OB -> N
OV -> S
KH -> B
BO -> B
HV -> P
BV -> K
PS -> F
CH -> C
SH -> H
OK -> V
NB -> K
BF -> S
CO -> O
NV -> H
FB -> K
FO -> C
CK -> P
BH -> B
OH -> F
KB -> N
OC -> K
KK -> O
CN -> H
FP -> K
VH -> K
VK -> P
HP -> S
FK -> F
BK -> H
KV -> V
BB -> O
KC -> F
KN -> C
PO -> P
NF -> P
PN -> S
PF -> S
PK -> O