| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [pron] could [vb infin] | 126 |
|
| 2 | [prep] [pron] could [vb infin] [adv] | 35 |
|
| 3 | what [pron] could [vb infin] [adv] | 35 |
|
| 4 | [prep] what [pron] could [adv] | 27 |
|
| 5 | [prep] what could [vb infin] [adv] | 6 |
|
