| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [pron] could [verb] | 126 |
|
| 2 | what [pron] could only [verb] | 11 |
|
| 3 | [prep] what [pron] could only | 8 |
|
| 4 | [prep] [pron] could only [verb] | 6 |
|
