| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] at the | 816 |
|
| 2 | [v-ing] at the [det] | 253 |
|
| 3 | [was/were] [v-ing] at [det] | 125 |
|
| 4 | [was/were] [v-ing] the [det] | 106 |
|
| 5 | [was/were] at the [det] | 59 |
|
