| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [vb pp] [prep] a | 2970 |
|
| 2 | [vb pp] [prep] a time | 233 |
|
| 3 | [vb past] [prep] a time | 133 |
|
| 4 | [vb past] [vb pp] [prep] time | 27 |
|
