| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [prep] [art] [adj] | 929 |
|
| 2 | [modal v] [verb] [prep] [art] same | 252 |
|
| 3 | could [verb] [prep] [art] [det] | 43 |
|
| 4 | could [verb] [prep] [art] same | 16 |
|
