C31232233133313221211113313331333133313113311331333133313121111132313211311   >>    C3123223313331322121111331333133313331311331133133313331312111113231321131   <<    C31232233133313221211113313331333133313113311331333133313121111132313211313   >>      C31232233133313221211113313331333133313113311331333133313121111132313211312   >>