C31232233133313221211113313331333133313331212111133133312212111   >>    C3123223313331322121111331333133313331333121211113313331221211   <<    C31232233133313221211113313331333133313331212111133133312212113   >>      C31232233133313221211113313331333133313331212111133133312212112   >>