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
5710
5709
5708
5707
5706
5705
5704
5703
5702
5701
5700
5699
5698
5697
5696
5695
5694
5693
5692
5691
5690