C31232233133313221211113313331333133313113311331333133311313121   >>    C3123223313331322121111331333133313331311331133133313331131312   <<    C31232233133313221211113313331333133313113311331333133311313123   >>      C31232233133313221211113313331333133313113311331333133311313122   >>