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
5190
5189
5188
5187
5186
5185
5184
5183
5182
5181
5180
5179
5178
5177
5176
5175
5174
5173
5172
5171
5170