Y \ X
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
13310
13309
13308
13307
13306
13305
13304
13303
13302
13301
13300
13299
13298
13297
13296
13295
13294
13293
13292
13291
13290