| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have gone [adj] | 22 |
|
| 2 | could have gone [det] | 12 |
|
| 3 | could have gone either | 9 |
|
| 4 | could have gone either | 9 |
|
| 5 | could have gone [adj] | 7 |
|
