| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [verb] [be] [prep] | 668 |
|
| 2 | [pron] [verb] [be] behind | 13 |
|
| 3 | who [verb] [be] behind | 8 |
|
| 4 | [Wh pn] [verb] [be] behind | 8 |
|
