| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [verb] [prep] a [adj] | 1120 |
|
| 2 | could [verb] [prep] a [adj] | 373 |
|
| 3 | could [not/n't] [verb] [prep] [adj] | 342 |
|
| 4 | could [not/n't] [verb] a [adj] | 249 |
|
| 5 | could [not/n't] [verb] [prep] a | 160 |
|
