| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [was/were] [prep] a time | 15 |
|
| 2 | [det] was [prep] a time | 15 |
|
| 3 | this [was/were] [prep] a time | 14 |
|
| 4 | [det] [was/were] at a time | 14 |
|
| 5 | [det] [was/were] at a time | 14 |
|
