| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] at [noun prp] | 1975 |
|
| 2 | [adv prt] at a | 665 |
|
| 3 | at a [noun prp] | 512 |
|
| 4 | [adv prt] a [noun prp] | 167 |
|
