Learn a Fact: 1 x 3

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

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