Y \ X
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
4830
4829
4828
4827
4826
4825
4824
4823
4822
4821
4820
4819
4818
4817
4816
4815
4814
4813
4812
4811
4810