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
15270
15269
15268
15267
15266
15265
15264
15263
15262
15261
15260
15259
15258
15257
15256
15255
15254
15253
15252
15251
15250