C31232233133313221211113313331333133313113311331333133313121111333131333212111   >>    C3123223313331322121111331333133313331311331133133313331312111133313133321211   <<    C31232233133313221211113313331333133313113311331333133313121111333131333212113   >>      C31232233133313221211113313331333133313113311331333133313121111333131333212112   >>