| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [verb] [pron] [prep] | 8177 |
|
| 2 | could not [verb] [pron] | 5476 |
|
| 3 | could not [verb] [prep] | 2120 |
|
| 4 | could [verb] [pron] [prep] | 1811 |
|
| 5 | could not [pron] [prep] | 14 |
|
