C312312111133131121333133313113313331333133313331333133313331311331333223313221   >>    C31231211113313112133313331311331333133313331333133313331333131133133322331322   <<    C312312111133131121333133313113313331333133313331333133313331311331333223313223   >>      C312312111133131121333133313113313331333133313331333133313331311331333223313222   >>