| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [prep] | 870 |
|
| 2 | [pron] could [prep] | 870 |
|
| 3 | [pron] [modal v] at | 672 |
|
| 4 | [pron] could at | 117 |
|
