| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] happen to [be] | 180 |
|
| 2 | it happen to [be] | 77 |
|
| 3 | it [adv] happen to | 40 |
|
| 4 | it [adv] to [be] | 32 |
|
