| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have [adv] happened before | 11 |
|
| 2 | [det] have [adv] happened before | 10 |
|
| 3 | it have [adv] happened before | 10 |
|
| 4 | [pers pn] have [adv] happened before | 10 |
|
| 5 | [adj] have [adv] happened before | 10 |
|
| 6 | it have [adv] happened before | 10 |
|
| 7 | that have [adv] happened before | 6 |
|
| 8 | that have [adv] happened before | 6 |
|
