| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who 's [be] | 62 |
|
| 2 | who 's [Wh pn] | 48 |
|
| 3 | who [Wh pn] [be] | 37 |
|
| 4 | 's [Wh pn] [be] | 31 |
|
