Y \ X
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
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
2940
2939
2938
2937
2936
2935
2934
2933
2932
2931
2930
2929
2928
2927
2926
2925
2924
2923
2922
2921
2920