Y \ X
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
3940
3939
3938
3937
3936
3935
3934
3933
3932
3931
3930
3929
3928
3927
3926
3925
3924
3923
3922
3921
3920