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
10530
10529
10528
10527
10526
10525
10524
10523
10522
10521
10520
10519
10518
10517
10516
10515
10514
10513
10512
10511
10510