| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] to [be] effective | 40 |
|
| 2 | [be] [vb pp] to be effective | 40 |
|
| 3 | [been] [vb pp] to [be] effective | 22 |
|
| 4 | been [vb pp] to [be] effective | 22 |
|
| 5 | [be] shown to [be] effective | 18 |
|
| 6 | be [vb pp] to [be] effective | 7 |
|
| 7 | [be] [vb pp] to [be] effective | 7 |
|
| 8 | [be] found to [be] effective | 5 |
|
| 9 | is [vb pp] to [be] effective | 5 |
|
| 10 | [is] [vb pp] to [be] effective | 5 |
|
