| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] about the same time | 135 |
|
| 2 | [prep] about the [det] time | 135 |
|
| 3 | [prep] about the [det] time | 135 |
|
| 4 | at about the [det] time | 133 |
|
