Y \ X
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
4060
4059
4058
4057
4056
4055
4054
4053
4052
4051
4050
4049
4048
4047
4046
4045
4044
4043
4042
4041
4040