Y \ X
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
4100
4099
4098
4097
4096
4095
4094
4093
4092
4091
4090
4089
4088
4087
4086
4085
4084
4083
4082
4081
4080