| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] to be effective | 35 |
|
| 2 | be to [be] effective | 35 |
|
| 3 | [is] to [be] effective | 23 |
|
| 4 | is to [be] effective | 23 |
|
| 5 | [am/are] to [be] effective | 11 |
|
| 6 | are to [be] effective | 11 |
|
