C31232233133313221211113313331333133313113311331333133313211232311331   >>    C3123223313331322121111331333133313331311331133133313331321123231133   <<    C31232233133313221211113313331333133313113311331333133313211232311333   >>      C31232233133313221211113313331333133313113311331333133313211232311332   >>