C31232233133313221211113313331333133313331212111133132312312131   >>    C3123223313331322121111331333133313331333121211113313231231213   <<    C31232233133313221211113313331333133313331212111133132312312133   >>      C31232233133313221211113313331333133313331212111133132312312132   >>