| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] could [not/n't] [vb infin] a [adj] | 20 |
|
| 2 | [noun prp] could [not/n't] [verb] a [adj] | 19 |
|
| 3 | [noun prp] could n't [verb] a [adj] | 11 |
|
| 4 | [noun prp] could not [verb] a [adj] | 9 |
|
