| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [verb] [prep] [adj] | 608 |
|
| 2 | [modal v] [adv] [verb] [prep] [adj -er] | 98 |
|
| 3 | could [adv] [verb] [prep] [adj -er] | 12 |
|
