| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [Wh det] [vb past] [prep] [det] [noun sg] | 7 |
|
| 2 | [adv] what [vb past] [prep] [det] [noun sg] | 6 |
|
| 3 | [adv] [Wh det] happened [prep] [det] [noun sg] | 6 |
|
