C31232233133313221211113313331333133313331212111112111133112221311311   >>    C3123223313331322121111331333133313331333121211111211113311222131131   <<    C31232233133313221211113313331333133313331212111112111133112221311313   >>      C31232233133313221211113313331333133313331212111112111133112221311312   >>