| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [vb infin] [Wh det] happened to | 41 |
|
| 2 | [not/n't] [vb infin] what happened to | 41 |
|
| 3 | [not/n't] [vb infin] [pron] happened to | 41 |
|
| 4 | [not/n't] [vb infin] what happened to | 41 |
|
| 5 | n't [vb infin] [pron] happened to | 34 |
|
| 6 | [not/n't] know [pron] happened to | 24 |
|
| 7 | [not/n't] care [pron] happened to | 7 |
|
| 8 | not [vb infin] [pron] happened to | 6 |
|
