| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [prep] a [adj] | 318 |
|
| 2 | [vb infin] on [prep] a [adj] | 35 |
|
| 3 | could [vb infin] on [prep] a | 15 |
|
| 4 | could [vb infin] on [prep] [adj] | 8 |
|
| 5 | could [vb infin] on a [adj] | 6 |
|
