| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be to be effective [prep] | 9 |
|
| 2 | [be] to be effective in | 8 |
|
| 3 | [am/are] to be effective [prep] | 5 |
|
| 4 | are to be effective [prep] | 5 |
|
