| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [verb] on a | 5 |
|
| 2 | who have be [verb] on a | 5 |
|
| 3 | who have [be] [verb] on a | 5 |
|
| 4 | who have [been] [verb] on a | 5 |
|
