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
8760
8759
8758
8757
8756
8755
8754
8753
8752
8751
8750
8749
8748
8747
8746
8745
8744
8743
8742
8741
8740