C31232233133313221211113313331333133313113311331333133313211232313212311   >>    C3123223313331322121111331333133313331311331133133313331321123231321231   <<    C31232233133313221211113313331333133313113311331333133313211232313212313   >>      C31232233133313221211113313331333133313113311331333133313211232313212312   >>