| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [was/were] at a time | 7 |
|
| 2 | it [was/were] at a time | 7 |
|
| 3 | [pers pn] [was/were] at a time | 7 |
|
| 4 | [pron] was at a time | 7 |
|
