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
2450
2449
2448
2447
2446
2445
2444
2443
2442
2441
2440
2439
2438
2437
2436
2435
2434
2433
2432
2431
2430