Y \ X
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
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
4050
4049
4048
4047
4046
4045
4044
4043
4042
4041
4040
4039
4038
4037
4036
4035
4034
4033
4032
4031
4030