C111123313331323113313331333133313231333132311312111133132112323112211231   >>    C11112331333132311331333133313331323133313231131211113313211232311221123   <<    C111123313331323113313331333133313231333132311312111133132112323112211233   >>      C111123313331323113313331333133313231333132311312111133132112323112211232   >>