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
8360
8359
8358
8357
8356
8355
8354
8353
8352
8351
8350
8349
8348
8347
8346
8345
8344
8343
8342
8341
8340