| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [verb] [prep] | 3668 |
|
| 2 | could [adv] [verb] [prep] | 1546 |
|
| 3 | [modal v] only [verb] [prep] | 1124 |
|
| 4 | [vb mod] only [verb] [prep] | 1124 |
|
| 5 | could only [verb] [prep] | 261 |
|
| 6 | could only [verb] [prep] | 261 |
|
