Y \ X
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
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
15330
15329
15328
15327
15326
15325
15324
15323
15322
15321
15320
15319
15318
15317
15316
15315
15314
15313
15312
15311
15310