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20
× 6
4
× 2
3
× 2
2
× 2
15
× 4
8
× 5
17
× 9
1
× 2
2
× 2
1
× 3
1
× 2
7
× 2
1
× 2
8
1
1
7
× 3
1
8
6
× 5
2
12
× 2
1
0
0
8
× 3
-1
8
1
× 2
2
× 3
0
× 3
6
× 3
2
3
× 2
0
0
2
× 2
1
2
× 2
1
2
11
57
× 4
-2
× 2
2
× 2
0
33
× 7
0
× 2
30
× 16
-4
3
× 5
49
× 12