C31232233133313221211113313331333133313113311331333133313121111121133132331211   >>    C3123223313331322121111331333133313331311331133133313331312111112113313233121   <<    C31232233133313221211113313331333133313113311331333133313121111121133132331213   >>      C31232233133313221211113313331333133313113311331333133313121111121133132331212   >>