| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [verb] [prep] | 1429 |
|
| 2 | [was/were] [v-ing] [verb] [prep] | 1429 |
|
| 3 | [was/were] [verb] [verb] on | 483 |
|
| 4 | [be] [v-ing] [verb] on | 323 |
|
| 5 | [was/were] [v-ing] [verb] on | 113 |
|
