| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [be] [conj] [pron] [vb base] | 37 |
|
| 2 | happen [be] [conj] [pron] [vb base] | 21 |
|
| 3 | [vb -s] happen [conj] [pron] [vb base] | 14 |
|
| 4 | [vb -s] happen [be] [conj] [pron] | 10 |
|
