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3-el perm inversions
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0
1
2
3
4
5
π
v
l
p-b
r
#
0
123
321
00
0
0
00
00
0
0
00
00
0
0
00
0
1
213
312
10
0
0
01
01
0
0
10
10
0
0
01
1
2
132
231
01
0
0
10
10
0
0
01
01
0
0
10
1
3
312
213
11
0
0
11
11
0
0
11
20
0
0
02
2
4
231
132
20
0
0
02
20
0
0
02
11
0
0
11
2
5
321
123
21
0
0
12
21
0
0
12
21
0
0
12
3