C31232233133313221211113313331333133313331212111133132222121221   >>    C3123223313331322121111331333133313331333121211113313222212122   <<    C31232233133313221211113313331333133313331212111133132222121223   >>      C31232233133313221211113313331333133313331212111133132222121222   >>