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Learn a Fact: 1 x 2

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

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