| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while at the [adj] [noun] [pron] | 30 |
|
| 2 | while at the same [noun] [pron] | 26 |
|
| 3 | while at the [det] [noun] [pron] | 26 |
|
| 4 | while at the same [noun] [pron] | 26 |
|
