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
4130
4129
4128
4127
4126
4125
4124
4123
4122
4121
4120
4119
4118
4117
4116
4115
4114
4113
4112
4111
4110