| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adj] time | 9436 |
|
| 2 | at [det] time | 7156 |
|
| 3 | [prep] some time | 2305 |
|
| 4 | [prep] some time | 2305 |
|
| 5 | at some [noun] | 1806 |
|
| 6 | at some time | 461 |
|
| 7 | at some time | 461 |
|
