C111123313331323113313331333133313231333132311312111133133313113311221322121   >>    C11112331333132311331333133313331323133313231131211113313331311331122132212   <<    C111123313331323113313331333133313231333132311312111133133313113311221322123   >>      C111123313331323113313331333133313231333132311312111133133313113311221322122   >>