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
13500
13499
13498
13497
13496
13495
13494
13493
13492
13491
13490
13489
13488
13487
13486
13485
13484
13483
13482
13481
13480