| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be for [pron] [to-vb] | 82 |
|
| 2 | be necessary for [pron] [to-vb] | 79 |
|
| 3 | it be necessary for [pron] | 62 |
|
| 4 | it necessary for [pron] [to-vb] | 9 |
|
