| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | think it [is] necessary for | 7 |
|
| 2 | think it [be] necessary for | 7 |
|
| 3 | think it be necessary for | 7 |
|
| 4 | think it 's necessary for | 6 |
|
| 5 | think it [be] necessary for | 5 |
|
