C111123313331323113313331333133313231333132311312111133131133133311211233131   >>    C11112331333132311331333133313331323133313231131211113313113313331121123313   <<    C111123313331323113313331333133313231333132311312111133131133133311211233133   >>      C111123313331323113313331333133313231333132311312111133131133133311211233132   >>