Y \ X
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
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
15020
15019
15018
15017
15016
15015
15014
15013
15012
15011
15010
15009
15008
15007
15006
15005
15004
15003
15002
15001
15000