| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [pron] had [adv] happened | 21 |
|
| 2 | if [pron] had [adv] happen | 17 |
|
| 3 | [subord] [pers pn] had [adv] happen | 17 |
|
| 4 | [subord] it had [adv] happen | 16 |
|
| 5 | [subord] it had [adv] happen | 16 |
|
| 6 | [subord] [pron] had never happen | 8 |
|
