| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] who was [verb] at the | 9 |
|
| 2 | [noun sg] who [was/were] [vb pp] at the | 7 |
|
| 3 | [noun sg] who [was/were] [v-ing] at the | 6 |
|
