| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adj] for [pron] | 437 |
|
| 2 | it is [adj] for [pron] | 403 |
|
| 3 | it be necessary for [pron] | 62 |
|
| 4 | it [be] necessary for [pron] | 62 |
|
| 5 | it [is] necessary for [pron] | 41 |
|
| 6 | [pron] is necessary for [pron] | 38 |
|
| 7 | it is necessary [prep] [pron] | 36 |
|
| 8 | it is necessary for [pron] | 33 |
|
| 9 | it is necessary for [pron] | 33 |
|
| 10 | [pers pn] is necessary for [pron] | 33 |
|
