Y \ X
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
2660
2659
2658
2657
2656
2655
2654
2653
2652
2651
2650
2649
2648
2647
2646
2645
2644
2643
2642
2641
2640