| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [verb] at [adj] | 1010 |
|
| 2 | [conj] could [verb] [adj] | 237 |
|
| 3 | could [verb] at [adj] | 124 |
|
| 4 | [conj] could [verb] at | 18 |
|
