C111123313331323113313331333133313331122112312111133133313112223221   >>    C11112331333132311331333133313331333112211231211113313331311222322   <<    C111123313331323113313331333133313331122112312111133133313112223223   >>      C111123313331323113313331333133313331122112312111133133313112223222   >>