Learn a Fact: 1 x 7

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

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