C111123313331323113313331333133313231333132311312111133131133132313231322131   >>    C11112331333132311331333133313331323133313231131211113313113313231323132213   <<    C111123313331323113313331333133313231333132311312111133131133132313231322133   >>      C111123313331323113313331333133313231333132311312111133131133132313231322132   >>