| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [noun] [prep] | 5162 |
|
| 2 | at a [noun sg] [prep] | 5112 |
|
| 3 | at [art] time [prep] | 3454 |
|
| 4 | at [art] time [prep] | 3454 |
|
| 5 | [prep] a time [prep] | 808 |
|
| 6 | [prep] a time [prep] | 808 |
|
| 7 | at a time [prep] | 476 |
|
| 8 | at a time [prep] | 476 |
|
| 9 | at a time [prep] | 476 |
|
| 10 | at a time [prep] | 476 |
|
