| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [be] at the time | 12 |
|
| 2 | who [be] at the time | 12 |
|
| 3 | who [was/were] at the time | 12 |
|
| 4 | who be at the time | 12 |
|
| 5 | who was at the time | 9 |
|
