Y \ X
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
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
14100
14099
14098
14097
14096
14095
14094
14093
14092
14091
14090
14089
14088
14087
14086
14085
14084
14083
14082
14081
14080