| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adv] what happened [prep] | 16 |
|
| 2 | [is] [adv] what [verb] to | 15 |
|
| 3 | [is] [adv] what happen to | 12 |
|
| 4 | [is] [adv] what [vb past] to | 11 |
|
| 5 | [is] [adv] what happened to | 10 |
|
| 6 | [be] [adv] what happened to | 10 |
|
| 7 | [is] [adv] [Wh det] happened to | 9 |
|
| 8 | [is] [adv] [pron] happened to | 9 |
|
| 9 | [is] [adv] what happened to | 9 |
|
