| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [v-ing] [adv] [prep] | 3370 |
|
| 2 | be [v-ing] on [prep] | 1394 |
|
| 3 | [be] [v-ing] on [prep] | 1394 |
|
| 4 | was [verb] on [prep] | 696 |
|
| 5 | [was/were] [v-ing] on [prep] | 427 |
|
