| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] to be effective | 35 |
|
| 2 | [be] [prep] be effective | 35 |
|
| 3 | be [prep] be effective | 35 |
|
| 4 | is [prep] be effective | 23 |
|
| 5 | [is] [prep] be effective | 23 |
|
| 6 | are [prep] be effective | 11 |
|
| 7 | [am/are] [prep] be effective | 11 |
|
