| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [verb] a [adj] [noun sg] | 2995 |
|
| 2 | could [verb] a [adj] [noun sg] | 1159 |
|
| 3 | could not [verb] a [noun sg] | 560 |
|
| 4 | could not [verb] a [adj] | 220 |
|
| 5 | could not [verb] [adj] [noun sg] | 81 |
|
