C31232233133313221211113313331333133313113311331333133313121111113113233231   >>    C3123223313331322121111331333133313331311331133133313331312111111311323323   <<    C31232233133313221211113313331333133313113311331333133313121111113113233233   >>      C31232233133313221211113313331333133313113311331333133313121111113113233232   >>