| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] of [Wh det] could [verb] | 8 |
|
| 2 | [det] [prep] [Wh det] could [verb] | 8 |
|
| 3 | [det] of [Wh det] could [verb] | 8 |
|
| 4 | [det] [prep] [Wh det] could [vb infin] | 8 |
|
| 5 | [det] [prep] which could [verb] | 8 |
|
