| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [vb infin] [prep] a [noun] | 1026 |
|
| 2 | could [vb infin] [prep] a [noun] | 663 |
|
| 3 | could not [vb infin] a [noun] | 571 |
|
| 4 | could not [vb infin] [prep] [noun] | 323 |
|
| 5 | could not [vb infin] [prep] a | 157 |
|
