| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] could [not/n't] [vb infin] | 178 |
|
| 2 | [prep] [adj] could [vb infin] | 146 |
|
| 3 | [prep] [adj] could [not/n't] | 34 |
|
| 4 | [prep] could [not/n't] [vb infin] | 6 |
|
