| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can prevent [pron] [prep] [v-ing] | 5 |
|
| 2 | can prevent [pron] [prep] [verb] | 5 |
|
| 3 | can prevent [pers pn] [prep] [verb] | 5 |
|
| 4 | can prevent [pron] from [verb] | 5 |
|
