| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] an | 4217 |
|
| 2 | or [vb past] [prep] | 920 |
|
| 3 | or [prep] an | 411 |
|
| 4 | or [vb past] an | 31 |
|
