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
15110
15109
15108
15107
15106
15105
15104
15103
15102
15101
15100
15099
15098
15097
15096
15095
15094
15093
15092
15091
15090