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
15110
15109
15108
15107
15106
15105
15104
15103
15102
15101
15100
15099
15098
15097
15096
15095
15094
15093
15092
15091
15090