| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] a | 32941 |
|
| 2 | [Wh pn] [vb past] [prep] | 9196 |
|
| 3 | [Wh pn] [vb past] a | 3239 |
|
| 4 | [Wh pn] [prep] a | 154 |
|
