| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] happen [be] [conj] [pron] [vb base] | 7 |
|
| 2 | what happen [be] [conj] [pron] [vb base] | 6 |
|
| 3 | [pron] happen [be] [conj] [pron] [vb base] | 6 |
|
| 4 | [vb -s] happen [be] [conj] [pron] [vb base] | 6 |
|
| 5 | what happen [be] [conj] [pron] [vb base] | 6 |
|
| 6 | [Wh det] happen [be] [conj] [pron] [vb base] | 6 |
|
| 7 | happen [be] [conj] [pron] [vb base] [verb] | 5 |
|
| 8 | happen [be] [conj] [pron] [vb base] [pron] | 5 |
|
