| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could [vb infin] [prep] | 595 |
|
| 2 | they could [vb infin] [prep] | 595 |
|
| 3 | [pron] could [vb infin] of | 410 |
|
| 4 | they [modal v] [vb infin] of | 81 |
|
| 5 | they could [verb] of | 25 |
|
| 6 | they could [vb infin] of | 25 |
|
