| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] at [adj] time | 19 |
|
| 2 | could be [vb pp] at [det] time | 19 |
|
| 3 | could be [vb pp] at [adj] time | 19 |
|
| 4 | could be [vb pp] at [adj] time | 19 |
|
| 5 | could be [vb pp] at any time | 14 |
|
| 6 | could be [vb pp] at any time | 14 |
|
