| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a time | 345 |
|
| 2 | [vb -s] at a [noun] | 226 |
|
| 3 | [vb -s] at a [noun sg] | 222 |
|
| 4 | [vb -s] at [art] time | 80 |
|
| 5 | [vb -s] at [art] time | 80 |
|
| 6 | [vb -s] [prep] a time | 71 |
|
| 7 | [vb -s] [prep] a time | 71 |
|
| 8 | [vb -s] at a time | 52 |
|
| 9 | [vb -s] at a time | 52 |
|
| 10 | [vb -s] at a time | 52 |
|
