| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while at the same time [art] | 18 |
|
| 2 | while at the [det] time [art] | 18 |
|
| 3 | while at the [det] time the | 15 |
|
| 4 | while at the [det] time the | 15 |
|
