C31232233133313221211113313331333133313331212111112111113331311221222131   >>    C3123223313331322121111331333133313331333121211111211111333131122122213   <<    C31232233133313221211113313331333133313331212111112111113331311221222133   >>      C31232233133313221211113313331333133313331212111112111113331311221222132   >>