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
11920
11919
11918
11917
11916
11915
11914
11913
11912
11911
11910
11909
11908
11907
11906
11905
11904
11903
11902
11901
11900