| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [noun sg] [prep] | 5112 |
|
| 2 | a [noun pl] [noun sg] [prep] | 587 |
|
| 3 | at a [noun pl] [noun sg] | 71 |
|
| 4 | at [noun pl] [noun sg] [prep] | 37 |
|
| 5 | at a [noun pl] [prep] | 7 |
|
