C111123313331323113313331333133313331122112312111133133313112113211111   >>    C11112331333132311331333133313331333112211231211113313331311211321111   <<    C111123313331323113313331333133313331122112312111133133313112113211113   >>      C111123313331323113313331333133313331122112312111133133313112113211112   >>