C111123313331323113313331333133313331323132333133313332112312131   >>    C11112331333132311331333133313331333132313233313331333211231213   <<    C111123313331323113313331333133313331323132333133313332112312133   >>      C111123313331323113313331333133313331323132333133313332112312132   >>