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
11930
11929
11928
11927
11926
11925
11924
11923
11922
11921
11920
11919
11918
11917
11916
11915
11914
11913
11912
11911
11910