| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it had [been] [adj] | 487 |
|
| 2 | [pron] had [been] one | 96 |
|
| 3 | [pers pn] had [been] one | 62 |
|
| 4 | it [verb] [been] one | 50 |
|
| 5 | it have [been] one | 50 |
|
| 6 | it [vb past] [been] one | 25 |
|
| 7 | it had [been] one | 25 |
|
| 8 | it had [be] one | 25 |
|
