| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had prevent [pron] from [v-ing] | 17 |
|
| 2 | had prevent [pron] from [v-ing] | 17 |
|
| 3 | had prevent [pron] [prep] [v-ing] | 17 |
|
| 4 | had prevented [pron] [prep] [v-ing] | 17 |
|
| 5 | had prevent [pers pn] [prep] [v-ing] | 16 |
|
| 6 | had prevent he [prep] [v-ing] | 8 |
|
| 7 | had prevent him [prep] [v-ing] | 8 |
|
