| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] could [vb infin] | 1007 |
|
| 2 | [noun] which could [vb infin] | 925 |
|
| 3 | [prep] [noun] which could | 315 |
|
| 4 | [prep] which could [vb infin] | 36 |
|
