| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which at [adj] time | 70 |
|
| 2 | [Wh det] at [adj] time | 66 |
|
| 3 | [Wh det] at [det] time | 40 |
|
| 4 | [Wh det] at that time | 37 |
|
| 5 | [Wh det] at that time | 37 |
|
| 6 | [Wh det] at one time | 26 |
|
| 7 | [Wh det] at one time | 26 |
|
| 8 | [Wh det] at [num] time | 26 |
|
| 9 | [Wh det] at [adj] time | 6 |
|
| 10 | [Wh det] at [adj] times | 6 |
|
