C111123313331323113313331333132313331311331312111133132112311311   >>    C11112331333132311331333133313231333131133131211113313211231131   <<    C111123313331323113313331333132313331311331312111133132112311313   >>      C111123313331323113313331333132313331311331312111133132112311312   >>