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
14660
14659
14658
14657
14656
14655
14654
14653
14652
14651
14650
14649
14648
14647
14646
14645
14644
14643
14642
14641
14640