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
12090
12089
12088
12087
12086
12085
12084
12083
12082
12081
12080
12079
12078
12077
12076
12075
12074
12073
12072
12071
12070