| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that [vb mod] [adv] have happened | 9 |
|
| 2 | that [vb mod] [adv] have happen | 9 |
|
| 3 | that [vb mod] [adv] have happen | 6 |
|
| 4 | that [vb mod] never have happen | 5 |
|
| 5 | that [vb mod] never have happen | 5 |
|
