Y \ X
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
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
11760
11759
11758
11757
11756
11755
11754
11753
11752
11751
11750
11749
11748
11747
11746
11745
11744
11743
11742
11741
11740