| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] who [was/were] [v-ing] on | 5 |
|
| 2 | who [was/were] [v-ing] on [prep] | 6 |
|
| 3 | who [was/were] [v-ing] on [prep] | 6 |
|
