C312312111133131121333133313113313331333133313331333133313331333133313222332211   >>    C31231211113313112133313331311331333133313331333133313331333133313331322233221   <<    C312312111133131121333133313113313331333133313331333133313331333133313222332213   >>      C312312111133131121333133313113313331333133313331333133313331333133313222332212   >>