C31232233133313221211113313331333133313113311331333133313113313232311231   >>    C3123223313331322121111331333133313331311331133133313331311331323231123   <<    C31232233133313221211113313331333133313113311331333133313113313232311233   >>      C31232233133313221211113313331333133313113311331333133313113313232311232   >>