| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] [prep] a | 6345 |
|
| 2 | to have been [verb] [prep] | 1588 |
|
| 3 | to have [verb] [prep] a | 210 |
|
| 4 | to have been [verb] a | 29 |
|
| 5 | to have been [prep] a | 19 |
|
