| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [adv] happen [to-vb] | 7 |
|
| 2 | which [adv] happen [verb] | 7 |
|
| 3 | which just happen [verb] | 6 |
|
| 4 | which just happen [verb] | 6 |
|
