| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 's [adv] [verb] | 1372 |
|
| 2 | 's [adv] [vb pp] | 1372 |
|
| 3 | [verb] [adv] happened | 374 |
|
| 4 | have [adv] happened | 374 |
|
| 5 | [vb -s] [adv] happened | 167 |
|
| 6 | 's [adv] happened | 60 |
|
| 7 | 's [adv] happen | 56 |
|
