| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not [vb infin] [prep] a [noun sg] | 425 |
|
| 2 | could not [vb infin] [prep] [art] [noun sg] | 372 |
|
| 3 | could not [vb infin] [prep] [art] [noun sg] | 372 |
|
| 4 | could [adv] [vb infin] [prep] a [noun sg] | 164 |
|
| 5 | could not [vb infin] [prep] a [noun sg] | 94 |
|
| 6 | could not [vb infin] [prep] a [noun] | 87 |
|
| 7 | could not [verb] [prep] a [noun sg] | 84 |
|
| 8 | could not [vb infin] [prep] a [noun sg] | 84 |
|
