C31232233133313221211113313331333133313331212111133133313232132211   >>    C3123223313331322121111331333133313331333121211113313331323213221   <<    C31232233133313221211113313331333133313331212111133133313232132213   >>      C31232233133313221211113313331333133313331212111133133313232132212   >>