| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [pers pn] [verb] to | 1019 |
|
| 2 | could [pers pn] [verb] [prep] | 385 |
|
| 3 | could [pers pn] [verb] [prep] | 385 |
|
| 4 | could [pron] [verb] to | 103 |
|
| 5 | could [pers pn] [verb] to | 101 |
|
