| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [pron] [prep] | 1806 |
|
| 2 | [modal v] [vb infin] them [prep] | 1785 |
|
| 3 | could [vb infin] [pers pn] [prep] | 1278 |
|
| 4 | could [vb infin] they [prep] | 231 |
|
| 5 | could [verb] them [prep] | 227 |
|
