| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [been] [prep] [noun] | 75 |
|
| 2 | [pron] [vb past] [been] [prep] [noun pl] | 57 |
|
| 3 | it [verb] [been] [prep] [noun pl] | 22 |
|
| 4 | it [vb past] [be] [prep] [noun pl] | 12 |
|
