| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] be for [pron] [to-vb] | 88 |
|
| 2 | be necessary for [pron] [to-vb] | 79 |
|
| 3 | [pron] be necessary for [pron] | 67 |
|
| 4 | [pron] necessary for [pron] [to-vb] | 9 |
|
