| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which it is necessary | 11 |
|
| 2 | which [pers pn] is necessary | 11 |
|
| 3 | which it is necessary | 11 |
|
| 4 | which [pron] is necessary | 11 |
|
| 5 | which [pron] is necessary | 11 |
|
