| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] [prep] a | 886 |
|
| 2 | who have been [verb] [prep] | 262 |
|
| 3 | who have [verb] [prep] a | 36 |
|
| 4 | who have been [verb] a | 9 |
|
