| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | happen [be] [vb pp] [prep] | 7 |
|
| 2 | happen be [vb pp] [prep] | 7 |
|
| 3 | happen [to-vb] [vb pp] [prep] | 6 |
|
| 4 | happen [conj] [vb pp] [prep] | 6 |
|
| 5 | happen [verb] [vb pp] [prep] | 6 |
|
| 6 | happen to have [vb pp] [prep] | 5 |
|
| 7 | happen have [vb pp] [prep] | 5 |
|
