| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [pron] [adv] happen that | 11 |
|
| 2 | [subord] it [adv] happen that | 11 |
|
| 3 | [subord] [pers pn] [adv] happen that | 11 |
|
| 4 | [subord] it [adv] happen that | 11 |
|
| 5 | [subord] [pron] [adv] happens that | 9 |
|
| 6 | [subord] [pron] so happen that | 7 |
|
