| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] on [noun] at the time | 14 |
|
| 2 | [was/were] on [noun] at the time | 14 |
|
| 3 | was on [noun] at the time | 13 |
|
| 4 | [was/were] on [noun sg] at the time | 12 |
|
