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path: root/2021/inputs/day_12.txt
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LP-cb
PK-yk
bf-end
PK-my
end-cb
BN-yk
cd-yk
cb-lj
yk-bf
bf-lj
BN-bf
PK-cb
end-BN
my-start
LP-yk
PK-bf
my-BN
start-PK
yk-EP
lj-BN
lj-start
my-lj
bf-LP