| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [adv] happen to | 22 |
|
| 2 | which [adv] happens to | 13 |
|
| 3 | which just happen to | 10 |
|
| 4 | which also happen to | 8 |
|
| 5 | which [adv] happened to | 7 |
|
