C31232233133313221211113313331333133313331212111133133313133222221   >>    C3123223313331322121111331333133313331333121211113313331313322222   <<    C31232233133313221211113313331333133313331212111133133313133222223   >>      C31232233133313221211113313331333133313331212111133133313133222222   >>