| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this [verb] [prep] a time | 13 |
|
| 2 | this [verb] at a time | 12 |
|
| 3 | this [verb] at a time | 12 |
|
| 4 | this [vb past] [prep] a time | 8 |
|
| 5 | this come [prep] a time | 7 |
|
