| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to [be] [adv] | 9378 |
|
| 2 | [vb past] to [be] [adv] | 1523 |
|
| 3 | happen to [be] [adv] | 78 |
|
| 4 | happened to [be] [adv] | 59 |
|
| 5 | happened [prep] [be] [adv] | 35 |
|
