| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | think it 's necessary for [pron] | 5 |
|
| 2 | think it be necessary for [pron] | 5 |
|
| 3 | think it be necessary for [pers pn] | 5 |
|
| 4 | think it be necessary for [pron] | 5 |
|
