| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [noun sg] | 15818 |
|
| 2 | [noun prp] a [noun sg] | 2951 |
|
| 3 | [noun prp] at [noun sg] | 1092 |
|
| 4 | [noun prp] at a | 551 |
|
