C31232233133313221211113313331311331333133313113313331333131122221   >>    C3123223313331322121111331333131133133313331311331333133313112222   <<    C31232233133313221211113313331311331333133313113313331333131122223   >>      C31232233133313221211113313331311331333133313113313331333131122222   >>