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
11200
11199
11198
11197
11196
11195
11194
11193
11192
11191
11190
11189
11188
11187
11186
11185
11184
11183
11182
11181
11180