| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] fail a drugs | 9 |
|
| 2 | [prep] fail a drugs | 9 |
|
| 3 | for fail a drugs | 6 |
|
| 4 | for fail a drugs | 6 |
|
| 5 | fail a drugs [verb] | 12 |
|
| 6 | fail a drugs [vb base] | 12 |
|
| 7 | fail a drugs test | 12 |
|
| 8 | fail a drugs test | 12 |
|
