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
10450
10449
10448
10447
10446
10445
10444
10443
10442
10441
10440
10439
10438
10437
10436
10435
10434
10433
10432
10431
10430