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
14190
14189
14188
14187
14186
14185
14184
14183
14182
14181
14180
14179
14178
14177
14176
14175
14174
14173
14172
14171
14170