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
5080
5079
5078
5077
5076
5075
5074
5073
5072
5071
5070
5069
5068
5067
5066
5065
5064
5063
5062
5061
5060