| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] [prep] at [adv] a | 14 |
|
| 2 | [adv prt] [prep] at least a | 14 |
|
| 3 | [adv prt] [prep] at [adv] a | 11 |
|
| 4 | [adv prt] for at [adv] a | 10 |
|
