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Learn a Fact: 1 x 4

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1

x4


4

4

x1


4

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