C31232233133313221211113313331333133313331212111133133313313311211   >>    C3123223313331322121111331333133313331333121211113313331331331121   <<    C31232233133313221211113313331333133313331212111133133313313311213   >>      C31232233133313221211113313331333133313331212111133133313313311212   >>