| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [modal v] have have a | 9 |
|
| 2 | [Wh pn] [modal v] have had a | 9 |
|
| 3 | who [modal v] have have a | 9 |
|
| 4 | [Wh pn] [vb mod] have have a | 9 |
|
