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
11270
11269
11268
11267
11266
11265
11264
11263
11262
11261
11260
11259
11258
11257
11256
11255
11254
11253
11252
11251
11250