| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [verb] [prep] a | 2162 |
|
| 2 | could [verb] [prep] a | 1099 |
|
| 3 | could not [verb] [prep] | 1005 |
|
| 4 | could not [verb] a | 346 |
|
