Y \ X
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
15010
15009
15008
15007
15006
15005
15004
15003
15002
15001
15000
14999
14998
14997
14996
14995
14994
14993
14992
14991
14990