| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | us [prep] a [noun] | 490 |
|
| 2 | us [prep] a [noun sg] | 476 |
|
| 3 | [pron] [prep] a while | 261 |
|
| 4 | [pers pn] [prep] a while | 231 |
|
| 5 | us [prep] a while | 14 |
|
| 6 | us [prep] [art] while | 14 |
|
| 7 | us [prep] a while | 14 |
|
| 8 | us [prep] [art] while | 14 |
|
| 9 | we [prep] a while | 14 |
|
