| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] [prep] a | 5419 |
|
| 2 | which have been [verb] [prep] | 2749 |
|
| 3 | which have [verb] [prep] a | 139 |
|
| 4 | which have been [verb] a | 44 |
|
| 5 | which have been [prep] a | 14 |
|
