| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [pron] is necessary for | 27 |
|
| 2 | [noun sg] [pron] is necessary for | 23 |
|
| 3 | [noun] it is necessary for | 14 |
|
| 4 | [noun] [pers pn] is necessary for | 14 |
|
| 5 | [noun] it is necessary for | 14 |
|
| 6 | [noun] [Wh det] is necessary for | 13 |
|
| 7 | [noun] which is necessary for | 12 |
|
| 8 | [noun] which is necessary for | 12 |
|
