C111123313331323113313331323133313331311331323232132313331323133313331213131   >>    C11112331333132311331333132313331333131133132323213231333132313331333121313   <<    C111123313331323113313331323133313331311331323232132313331323133313331213133   >>      C111123313331323113313331323133313331311331323232132313331323133313331213132   >>