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