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| number of permutation | |||
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排列数 : 20 phrases in 11 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Business | 2 |
| Communications | 1 |
| Computers | 2 |
| Earth sciences | 3 |
| Economy | 1 |
| Mathematics | 2 |
| Oil / petroleum | 2 |
| Statistics | 1 |
| Technology | 4 |
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