| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [verb] [prep] [det] time | 8 |
|
| 2 | could [vb infin] [vb pp] [prep] [det] time | 8 |
|
| 3 | could [vb infin] [verb] [prep] [det] time | 8 |
|
| 4 | could [vb infin] [verb] [prep] [det] time | 8 |
|
| 5 | could [vb infin] [verb] at [det] time | 7 |
|
| 6 | could [vb infin] [verb] at [det] time | 7 |
|
| 7 | could [vb infin] [verb] [prep] any time | 7 |
|
| 8 | could [vb infin] happened [prep] [det] time | 5 |
|
| 9 | could [vb infin] happen [prep] [det] time | 5 |
|
