C31232233133313221211113313331333133313331212111133133312211211   >>    C3123223313331322121111331333133313331333121211113313331221121   <<    C31232233133313221211113313331333133313331212111133133312211213   >>      C31232233133313221211113313331333133313331212111133133312211212   >>