C11112331312111112111133133313331333132323213331333132322331323122132121   >>    C1111233131211111211113313331333133313232321333133313232233132312213212   <<    C11112331312111112111133133313331333132323213331333132322331323122132123   >>      C11112331312111112111133133313331333132323213331333132322331323122132122   >>