| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he could [not/n't] [vb infin] a [adj] | 24 |
|
| 2 | he could [not/n't] [verb] a [adj] | 22 |
|
| 3 | he could not [verb] a [adj] | 17 |
|
| 4 | he could n't [verb] a [adj] | 7 |
|
