| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [adv] be [adj] | 118 |
|
| 2 | it [vb past] [adv] be [adj] | 97 |
|
| 3 | it [verb] [adv] be necessary | 14 |
|
| 4 | [pron] [vb past] [adv] be necessary | 6 |
|
| 5 | it [vb past] [adv] [be] necessary | 5 |
|
| 6 | it [vb past] [adv] be necessary | 5 |
|
| 7 | it [vb past] [adv] be necessary | 5 |
|
| 8 | [pers pn] [vb past] [adv] be necessary | 5 |
|
