| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [vb pp] [adv] for | 9 |
|
| 2 | [Wh pn] have been [vb pp] [adv prt] for | 7 |
|
| 3 | [Wh pn] had been [vb pp] [adv] for | 5 |
|
