| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [adv] happen to be | 20 |
|
| 2 | which [adv] happens to [be] | 13 |
|
| 3 | which just happen to [be] | 10 |
|
| 4 | which also happen to [be] | 8 |
|
| 5 | which [adv] happened to [be] | 6 |
|
