| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] a [noun] | 17059 |
|
| 2 | [verb] [prep] a time | 636 |
|
| 3 | [vb past] [prep] [art] time | 602 |
|
| 4 | [vb past] [prep] [art] time | 602 |
|
| 5 | [vb past] [prep] a time | 133 |
|
| 6 | [vb past] [prep] a time | 133 |
|
