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Learn a Fact: 1 x 3

1
1
x  5
2
1
x  2
3
1
x  1
4
5
x  0
5
2
x  0
6
0
x  4
7
0
x  3
8
7
x  1
9
1
x  8
10
1
x  9
11
4
x  1
12
0
x  1
13
0
x  7
14
8
x  0
15
3
x  1
16
0
x  9
17
6
x  0
18
6
x  1

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