| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] what happened to the | 9 |
|
| 2 | [adv] what happened to the | 9 |
|
| 3 | [adv] [pron] happened to the | 9 |
|
| 4 | [adv] [Wh det] happened to the | 9 |
|
| 5 | [adv] [pron] happened to the | 9 |
|
| 6 | so [pron] happened to the | 5 |
|
