| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] on a | 299 |
|
| 2 | [Wh det] have been [verb] on | 152 |
|
| 3 | [Wh det] have been [verb] a | 52 |
|
| 4 | [Wh det] have [verb] on a | 7 |
|
