| 要素 | s1 | s2 | s3 | s4 | s5 | s6 | s7 | s8 | s9 | 驱动力 |
| s1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| s2 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 3 |
| s3 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 7 |
| s4 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 3 |
| s5 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| s6 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 4 |
| s7 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 3 |
| s8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| s9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 依赖性 | 5 | 4 | 1 | 1 | 3 | 2 | 4 | 3 | 1 |
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