| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [noun pl] [prep] a | 5256 |
|
| 2 | [prep] [art] [noun] at a | 1067 |
|
| 3 | [prep] [art] [noun pl] at [art] | 928 |
|
| 4 | [prep] [art] [noun pl] at a | 84 |
|
