| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] a [noun] | 3613 |
|
| 2 | [prep] [pron] at [noun] | 766 |
|
| 3 | [pron] at a [noun] | 532 |
|
| 4 | [prep] [pron] at a | 171 |
|
| 5 | [prep] at a [noun] | 29 |
|
