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
7300
7299
7298
7297
7296
7295
7294
7293
7292
7291
7290
7289
7288
7287
7286
7285
7284
7283
7282
7281
7280