| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [verb] at a [noun] | 440 |
|
| 2 | [noun sg] [verb] at [art] time | 168 |
|
| 3 | [noun sg] [verb] at [art] time | 168 |
|
| 4 | [noun] [verb] at a time | 98 |
|
| 5 | [noun sg] [verb] [prep] a time | 92 |
|
| 6 | [noun sg] [verb] at a time | 62 |
|
