| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [prep] [adj] | 1717 |
|
| 2 | [modal v] [vb infin] at [adj] | 1139 |
|
| 3 | [vb mod] [vb infin] at [adj] | 1139 |
|
| 4 | could [verb] at [adj] | 124 |
|
| 5 | could [vb infin] at [adj] | 124 |
|
