| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] have been [adv] [vb pp] to | 10 |
|
| 2 | [Wh pn] have be [adv] [vb pp] to | 10 |
|
| 3 | who have be [adv] [vb pp] to | 10 |
|
| 4 | [Wh pn] has be [adv] [vb pp] to | 5 |
|
