| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb past] [prep] | 8214 |
|
| 2 | [vb past] [prep] [num ord] | 1284 |
|
| 3 | which [vb past] [num ord] | 136 |
|
| 4 | which [prep] [num ord] | 52 |
|
