C111123313331323113313331333133313331323132333133313331333132212231   >>    C11112331333132311331333133313331333132313233313331333133313221223   <<    C111123313331323113313331333133313331323132333133313331333132212233   >>      C111123313331323113313331333133313331323132333133313331333132212232   >>