Y \ X
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
12350
12349
12348
12347
12346
12345
12344
12343
12342
12341
12340
12339
12338
12337
12336
12335
12334
12333
12332
12331
12330