| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who could [verb] | 1259 |
|
| 2 | who could [vb infin] | 1251 |
|
| 3 | [pron] could go | 1087 |
|
| 4 | who [modal v] go | 94 |
|
| 5 | who could go | 5 |
|
