Learn a Fact: 3 x 1

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

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