| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] had [verb] last | 6 |
|
| 2 | [Wh det] have [vb pp] last | 6 |
|
| 3 | [Wh det] have happen last | 5 |
|
| 4 | [Wh det] have happened last | 5 |
|
| 5 | what have [verb] last | 5 |
|
