| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [verb] [prep] | 2119 |
|
| 2 | they could not [verb] | 1265 |
|
| 3 | they could [verb] [prep] | 585 |
|
| 4 | they not [verb] [prep] | 20 |
|
| 5 | they could not [prep] | 9 |
|
