| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] at a [noun] [prep] | 212 |
|
| 2 | [adv] at [art] time [prep] | 112 |
|
| 3 | [adv] at [art] time [prep] | 112 |
|
| 4 | [adv] [prep] a time [prep] | 46 |
|
| 5 | [adv] [prep] a time [prep] | 46 |
|
| 6 | [adv] at a time [prep] | 19 |
|
| 7 | [adv] at a time [prep] | 17 |
|
| 8 | [adv] at a time [prep] | 17 |
|
| 9 | [adv] at a time [prep] | 17 |
|
