C31232233133313221211113313331333133313113311331211113311211323311   >>    C3123223313331322121111331333133313331311331133121111331121132331   <<    C31232233133313221211113313331333133313113311331211113311211323313   >>      C31232233133313221211113313331333133313113311331211113311211323312   >>