| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] be [adj] [prep] | 133 |
|
| 2 | it [vb past] be [adj] [prep] | 98 |
|
| 3 | it [verb] be necessary [prep] | 15 |
|
| 4 | [pron] [vb past] be necessary [prep] | 7 |
|
| 5 | [pers pn] [vb past] be necessary [prep] | 6 |
|
| 6 | it [vb past] be necessary [prep] | 5 |
|
| 7 | it [vb past] [be] necessary [prep] | 5 |
|
| 8 | it [vb past] be necessary [prep] | 5 |
|
| 9 | it [vb past] be necessary [prep] | 5 |
|
