C31232233133313221211113313331333133313113311331333133313113313232223132231   >>    C3123223313331322121111331333133313331311331133133313331311331323222313223   <<    C31232233133313221211113313331333133313113311331333133313113313232223132233   >>      C31232233133313221211113313331333133313113311331333133313113313232223132232   >>