| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he could [not/n't] [vb infin] [adv] [noun] | 13 |
|
| 2 | he could not [verb] [adv] [noun] | 9 |
|
| 3 | he could [not/n't] [verb] [Wh adv] [noun] | 8 |
|
| 4 | he could [not/n't] [verb] [adv] [noun prp] | 7 |
|
| 5 | he could [not/n't] [verb] why [noun] | 6 |
|
| 6 | he could [not/n't] [verb] why [noun] | 6 |
|
