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
11300
11299
11298
11297
11296
11295
11294
11293
11292
11291
11290
11289
11288
11287
11286
11285
11284
11283
11282
11281
11280