| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [adv] [verb] [prep] | 1188 |
|
| 2 | who [adv] [vb past] [prep] | 654 |
|
| 3 | [pron] [adv] happened [prep] | 111 |
|
| 4 | who [adv] happen [prep] | 17 |
|
| 5 | who [adv] happened [prep] | 9 |
|
