| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [num] [noun] [art] | 69 |
|
| 2 | [prep] a [num] [noun pl] [art] | 52 |
|
| 3 | [prep] a [num] mile [art] | 21 |
|
| 4 | [prep] [art] [num] miles [art] | 16 |
|
| 5 | [prep] a [adj] miles [art] | 16 |
|
