| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at about the [det] time [prep] | 7 |
|
| 2 | at about the [det] time [prep] | 7 |
|
| 3 | at about the [det] time [prep] | 7 |
|
| 4 | at about the same time [prep] | 7 |
|
