C221213331323133112111133133313331322331311331333133313123231312121   >>    C22121333132313311211113313331333132233131133133313331312323131212   <<    C221213331323133112111133133313331322331311331333133313123231312123   >>      C221213331323133112111133133313331322331311331333133313123231312122   >>