| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [pers pn] could [vb infin] | 124 |
|
| 2 | what [pers pn] could [not/n't] [vb infin] | 64 |
|
| 3 | [prep] [pers pn] could [not/n't] [vb infin] | 46 |
|
| 4 | [prep] what [pers pn] could [not/n't] | 9 |
|
