| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what they could [vb infin] | 27 |
|
| 2 | [prep] what they could [verb] | 27 |
|
| 3 | [prep] what they could [verb] | 27 |
|
| 4 | [prep] what they could do | 8 |
|
| 5 | [prep] what they could do | 8 |
|
| 6 | on what they could [verb] | 6 |
|
| 7 | on what they could [verb] | 6 |
|
| 8 | about what they could [verb] | 6 |
|
| 9 | about what they could [verb] | 6 |
|
