| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] could [not/n't] [vb infin] | 1381 |
|
| 2 | [art] [noun prp] could [vb infin] | 180 |
|
| 3 | [art] [noun prp] could [not/n't] | 51 |
|
