| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adj] for [pron] | 1136 |
|
| 2 | [pron] be necessary for [pron] | 67 |
|
| 3 | it be necessary [prep] [pron] | 65 |
|
| 4 | it [be] necessary for [pron] | 62 |
|
