| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he could [not/n't] [verb] [prep] | 281 |
|
| 2 | he could [not/n't] [verb] [be] | 53 |
|
| 3 | could [not/n't] [verb] [be] [prep] | 24 |
|
| 4 | he could [verb] [be] [prep] | 10 |
|
