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
14590
14589
14588
14587
14586
14585
14584
14583
14582
14581
14580
14579
14578
14577
14576
14575
14574
14573
14572
14571
14570