C111123313331323113313331333133313331323132333133313331312213111   >>    C11112331333132311331333133313331333132313233313331333131221311   <<    C111123313331323113313331333133313331323132333133313331312213113   >>      C111123313331323113313331333133313331323132333133313331312213112   >>