C31232233133313221211113313331333133313331212111112111133121133211   >>    C3123223313331322121111331333133313331333121211111211113312113321   <<    C31232233133313221211113313331333133313331212111112111133121133213   >>      C31232233133313221211113313331333133313331212111112111133121133212   >>