| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [prep] [adv] | 338 |
|
| 2 | [was/were] [v-ing] [prep] [adv] | 327 |
|
| 3 | [was/were] [verb] at [adv] | 297 |
|
| 4 | [be] [v-ing] at [adv] | 253 |
|
| 5 | [was/were] [v-ing] at [adv] | 69 |
|
| 6 | [was/were] [v-ing] at [adv] | 63 |
|
