Learn a Fact: 3 x 1

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

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