C111123313331323113313331333133313331122112312111133112331311331333131222331   >>    C11112331333132311331333133313331333112211231211113311233131133133313122233   <<    C111123313331323113313331333133313331122112312111133112331311331333131222333   >>      C111123313331323113313331333133313331122112312111133112331311331333131222332   >>