| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] was necessary for the [adj] | 10 |
|
| 2 | it was necessary for the [adj] | 6 |
|
| 3 | [pers pn] was necessary for the [adj] | 6 |
|
| 4 | it was necessary for the [adj] | 6 |
|
| 5 | was necessary for the [adj] [noun] | 13 |
|
| 6 | was necessary for the [adj] [noun sg] | 10 |
|
