C31232233133313221211113313331333133313113311331333133313121111121331111   >>    C3123223313331322121111331333133313331311331133133313331312111112133111   <<    C31232233133313221211113313331333133313113311331333133313121111121331113   >>      C31232233133313221211113313331333133313113311331333133313121111121331112   >>