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
3720
3719
3718
3717
3716
3715
3714
3713
3712
3711
3710
3709
3708
3707
3706
3705
3704
3703
3702
3701
3700