| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [adv] [verb] to be | 190 |
|
| 2 | [Wh det] [adv] [vb past] to be | 61 |
|
| 3 | [pron] [adv] happened to be | 47 |
|
| 4 | [Wh det] [adv] happen to be | 20 |
|
| 5 | [Wh det] [adv] happened [prep] be | 6 |
|
| 6 | [Wh det] [adv] happened to [be] | 6 |
|
