| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which [pron] could [vb infin] | 373 |
|
| 2 | which [pron] could [vb infin] [art] | 84 |
|
| 3 | [prep] [pron] could [vb infin] [art] | 58 |
|
| 4 | [prep] which could [vb infin] [art] | 8 |
|
