C31232233133313221211113313331333133313113311331333133313331311312333231   >>    C3123223313331322121111331333133313331311331133133313331333131131233323   <<    C31232233133313221211113313331333133313113311331333133313331311312333233   >>      C31232233133313221211113313331333133313113311331333133313331311312333232   >>