| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it happen [prep] | 88 |
|
| 2 | it [adv] happen [prep] | 73 |
|
| 3 | [subord] it [adv] happen | 57 |
|
| 4 | [subord] [adv] happen [prep] | 21 |
|
| 5 | [subord] it [adv] [prep] | 7 |
|
