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