Y \ X
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
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
11570
11569
11568
11567
11566
11565
11564
11563
11562
11561
11560
11559
11558
11557
11556
11555
11554
11553
11552
11551
11550