| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] that prevent them [prep] | 7 |
|
| 2 | [noun] that prevent them [prep] | 7 |
|
| 3 | that prevent them [prep] [v-ing] | 7 |
|
| 4 | that prevent them [prep] [verb] | 7 |
|
