| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [vb pp] [prep] [det] | 676 |
|
| 2 | [vb base] to have been [vb pp] [prep] | 134 |
|
| 3 | to have been [vb pp] [prep] [det] | 88 |
|
| 4 | [vb base] to have [vb pp] [prep] [det] | 16 |
|
