Y \ X
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
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
12360
12359
12358
12357
12356
12355
12354
12353
12352
12351
12350
12349
12348
12347
12346
12345
12344
12343
12342
12341
12340