| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it had [been] [verb] | 1683 |
|
| 2 | [pron] had [been] see | 84 |
|
| 3 | it [verb] [been] see | 46 |
|
| 4 | it have [been] see | 46 |
|
| 5 | it had [be] see | 7 |
|
| 6 | it [vb past] [been] see | 7 |
|
