Y \ X
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
2690
2689
2688
2687
2686
2685
2684
2683
2682
2681
2680
2679
2678
2677
2676
2675
2674
2673
2672
2671
2670