| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] found to [be] effective | 5 |
|
| 2 | [be] found to be effective | 5 |
|
| 3 | [be] found to be effective | 5 |
|
| 4 | be found to [be] effective | 5 |
|
