Learn a Fact: 1 x 3

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

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