C111123313331323113313331323133313331311331311331333131333132333111   >>    C11112331333132311331333132313331333131133131133133313133313233311   <<    C111123313331323113313331323133313331311331311331333131333132333113   >>      C111123313331323113313331323133313331311331311331333131333132333112   >>