| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [not/n't] [verb] [pron] [prep] [verb] | 96 |
|
| 2 | [vb past] [not/n't] [vb infin] [pron] [prep] [verb] | 69 |
|
| 3 | [verb] [not/n't] prevent [pron] [prep] [verb] | 35 |
|
| 4 | [vb past] [not/n't] prevent [pron] [prep] [verb] | 28 |
|
| 5 | [vb past] [adv] prevent [pron] [prep] [verb] | 24 |
|
| 6 | [vb past] [not/n't] prevent [pron] [prep] [verb] | 24 |
|
