| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] to [be] more effective | 8 |
|
| 2 | [be] [vb pp] to be more effective | 8 |
|
| 3 | [be] [vb pp] to [be] more effective | 8 |
|
| 4 | [been] [vb pp] to [be] more effective | 6 |
|
| 5 | been [vb pp] to [be] more effective | 6 |
|
| 6 | [be] found to [be] more effective | 5 |
|
