| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [verb] to be | 1421 |
|
| 2 | which [vb past] to be | 476 |
|
| 3 | [pron] happened to be | 236 |
|
| 4 | which happen to be | 52 |
|
| 5 | [Wh det] happened to be | 18 |
|
| 6 | which happened to be | 17 |
|
| 7 | which happened to [be] | 17 |
|
| 8 | which happened [prep] be | 17 |
|
