21120
2
1
1 2
1 2
3
2x |
2x |
2x |
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1x |
1x |
2x |
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1 |
2 |
1 |
2 |
3 |
2x
1x |
2x |
2x |
|
1x |
1x |
1x |
2x |
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1 |
2 |
3 |
4 |
5 |
4
4x 4x
1 2
4x
8x |
2x |
8x |
2x |
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1 |
2 |
3 |
4 |
2x
5
1x |
1x |
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3
1x
1
|
1x |
1x |
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1x |
1x |
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2 |
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4 |
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6
1
|
1x |
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|
4x |
2x |
2x |
5 |
7 |
|
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2
2x
1x
6
7
4x
1
1 |
2 |
3 |
2x |
2x |
|
1x |
1x |
2x |
2
8
2x |
2x |
6x |
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3
1 2
2x
9
2x |
|
2x |
1x |
1x |
2x |
1x |
1x |
2x |
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|
4
1 |
3 |
5 |
2 |
4 |
6 |
10
2x |
1x |
1 x |
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2
1x
1x
1
1x
3
11
2x 2x
2x 1x
4 6
1x 1x
5
12
7 8
4x |
2x |
13
3x
2
1x
1
1x
3
14
3x |
1x |
2x |
|
4 6
2x
5
15
|
2x |
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1x |
2x |
2x |
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9 |
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7 |
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1x |
1x |
4x |
1x |
2x |
2x |
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8 10
16
+ 2
1x
1x |
1x |
1x |
|
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1
17
1x
3x |
1x |
1x |
2
18
1x |
2x |
1 |
2 |
|
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3
19
1x |
1x |
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4
20
5
21
3x |
1x |
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2
1x
1
1x
3
22
1x
4
1x
5
23