| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [Wh det] [vb past] [prep] [adj] [noun] | 8 |
|
| 2 | [be] what [vb past] [prep] [adj] [noun] | 7 |
|
| 3 | [be] [Wh det] happened [prep] [adj] [noun] | 5 |
|
