C31232233133313221211113313331311331333131323132313331323131221   >>    C3123223313331322121111331333131133133313132313231333132313122   <<    C31232233133313221211113313331311331333131323132313331323131223   >>      C31232233133313221211113313331311331333131323132313331323131222   >>