| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [vb infin] [Wh det] happened [prep] [noun] | 9 |
|
| 2 | [not/n't] [vb infin] what happened [prep] [noun] | 9 |
|
| 3 | [not/n't] [vb infin] [pron] happened [prep] [noun] | 9 |
|
| 4 | [not/n't] [vb infin] what happened [prep] [noun] | 9 |
|
| 5 | n't [vb infin] [pron] happened [prep] [noun] | 8 |
|
| 6 | [not/n't] [vb infin] [pron] happened [prep] [noun prp] | 7 |
|
| 7 | [not/n't] [vb infin] [pron] happened to [noun] | 6 |
|
| 8 | [not/n't] [vb infin] [pron] happened to [noun] | 6 |
|
