Y \ X
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
8890
8889
8888
8887
8886
8885
8884
8883
8882
8881
8880
8879
8878
8877
8876
8875
8874
8873
8872
8871
8870