| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could [verb] | 4234 |
|
| 2 | they could [vb infin] | 4177 |
|
| 3 | [pron] could reach | 107 |
|
| 4 | [pers pn] could reach | 97 |
|
| 5 | they [modal v] reach | 65 |
|
| 6 | they could reach | 21 |
|
| 7 | they could reach | 21 |
|
