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

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