C111123313331323113313331333133313331122112312111133133313112121133131   >>    C11112331333132311331333133313331333112211231211113313331311212113313   <<    C111123313331323113313331333133313331122112312111133133313112121133133   >>      C111123313331323113313331333133313331122112312111133133313112121133132   >>