C312312111133131121333133313113313331333133313331333133112113313211   >>    C31231211113313112133313331311331333133313331333133313311211331321   <<    C312312111133131121333133313113313331333133313331333133112113313213   >>      C312312111133131121333133313113313331333133313331333133112113313212   >>