C31232233133313221211113313331333133313113311331333133313121111131223221   >>    C3123223313331322121111331333133313331311331133133313331312111113122322   <<    C31232233133313221211113313331333133313113311331333133313121111131223223   >>      C31232233133313221211113313331333133313113311331333133313121111131223222   >>