| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | preventing [pers pn] [prep] [v-ing] [prep] the | 6 |
|
| 2 | preventing [pron] from [v-ing] [prep] the | 6 |
|
| 3 | preventing [pron] from [v-ing] [prep] the | 6 |
|
| 4 | preventing [pron] [prep] [v-ing] [prep] the | 6 |
|
