| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who were [v-ing] [prep] [det] [noun] | 7 |
|
| 2 | [Wh pn] were [v-ing] [prep] [det] [noun] | 7 |
|
| 3 | [Wh pn] were [v-ing] [prep] [det] [noun sg] | 5 |
|
