| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb past] [vb infin] a | 12 |
|
| 2 | which [vb past] [vb infin] a | 10 |
|
| 3 | [Wh det] did [vb infin] a | 9 |
|
