C31232233133313221211113313331333133313331212111112111133213221211   >>    C3123223313331322121111331333133313331333121211111211113321322121   <<    C31232233133313221211113313331333133313331212111112111133213221213   >>      C31232233133313221211113313331333133313331212111112111133213221212   >>