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
11530
11529
11528
11527
11526
11525
11524
11523
11522
11521
11520
11519
11518
11517
11516
11515
11514
11513
11512
11511
11510