C31232233133313221211113313331333133313331212111133133313221333133313311222121   >>    C3123223313331322121111331333133313331333121211113313331322133313331331122212   <<    C31232233133313221211113313331333133313331212111133133313221333133313311222123   >>      C31232233133313221211113313331333133313331212111133133313221333133313311222122   >>