C31232233133313221211113313331311331333133313331323133311231211   >>    C3123223313331322121111331333131133133313331333132313331123121   <<    C31232233133313221211113313331311331333133313331323133311231213   >>      C31232233133313221211113313331311331333133313331323133311231212   >>