| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [adv] [vb pp] in | 17 |
|
| 2 | [Wh pn] had been [adv] [vb pp] in | 7 |
|
| 3 | [Wh pn] has been [adv] [vb pp] in | 5 |
|
