| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] be necessary for [pron] | 62 |
|
| 2 | [pers pn] be for [pron] [prep] | 20 |
|
| 3 | be necessary for [pron] [prep] | 16 |
|
| 4 | [pers pn] necessary for [pron] [prep] | 5 |
|
