| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [adv] happen [prep] [be] [art] | 6 |
|
| 2 | which [adv] happen [prep] [be] [art] | 6 |
|
| 3 | which happen [prep] [be] [prep] [art] | 6 |
|
| 4 | which happen [prep] [be] [prep] [art] | 6 |
|
| 5 | which happen [prep] [be] [art] [noun] | 8 |
|
| 6 | which happen [prep] [be] [art] [noun sg] | 7 |
|
