| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] at [det] time | 94 |
|
| 2 | [vb mod] at [det] time | 94 |
|
| 3 | could at [det] [noun] | 17 |
|
| 4 | could at [adj] time | 11 |
|
| 5 | could at [det] time | 9 |
|
| 6 | could [prep] [det] time | 9 |
|
