Y \ X
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
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
12270
12269
12268
12267
12266
12265
12264
12263
12262
12261
12260
12259
12258
12257
12256
12255
12254
12253
12252
12251
12250