C11112331312111112111133133313331333132323213331333132322331323122132313111   >>    C1111233131211111211113313331333133313232321333133313232233132312213231311   <<    C11112331312111112111133133313331333132323213331333132322331323122132313113   >>      C11112331312111112111133133313331333132323213331333132322331323122132313112   >>