Y \ X
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
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
5880
5879
5878
5877
5876
5875
5874
5873
5872
5871
5870
5869
5868
5867
5866
5865
5864
5863
5862
5861
5860