| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the time this [noun sg] [was/were] | 13 |
|
| 2 | at the time this [noun sg] | 9 |
|
| 3 | at the time [noun sg] [was/were] | 9 |
|
| 4 | at the time this [was/were] | 6 |
|
