| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [pron] [verb] [pron] | 206 |
|
| 2 | [vb mod] [verb] [indef pn] [verb] [pron] | 178 |
|
| 3 | [modal v] [verb] [indef pn] [verb] [pron] | 178 |
|
| 4 | could [verb] [indef pn] [verb] [pron] | 26 |
|
