| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] | 407844 |
|
| 2 | at [art] [noun sg] | 112190 |
|
| 3 | at [art] [noun sg] | 112190 |
|
| 4 | at a [noun sg] | 15818 |
|
| 5 | at a [noun] | 15341 |
|
