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
5210
5209
5208
5207
5206
5205
5204
5203
5202
5201
5200
5199
5198
5197
5196
5195
5194
5193
5192
5191
5190