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
5690
5689
5688
5687
5686
5685
5684
5683
5682
5681
5680
5679
5678
5677
5676
5675
5674
5673
5672
5671
5670