C31232233133313221211113313331333133313331212111133133313132232221   >>    C3123223313331322121111331333133313331333121211113313331313223222   <<    C31232233133313221211113313331333133313331212111133133313132232223   >>      C31232233133313221211113313331333133313331212111133133313132232222   >>