| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [was/were] [v-ing] [prep] [noun sg] | 22 |
|
| 2 | which was [v-ing] [prep] [noun sg] | 15 |
|
| 3 | which were [v-ing] [prep] [noun sg] | 7 |
|
