| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [verb] | 45395 |
|
| 2 | [pron] [verb] [indef pn] | 18013 |
|
| 3 | could [verb] [indef pn] | 1156 |
|
| 4 | [pron] could [indef pn] | 15 |
|
