| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of [noun] [noun] [prep] a time | 15 |
|
| 2 | of [noun] [noun] [prep] a time | 15 |
|
| 3 | of [noun] [noun] at a time | 13 |
|
| 4 | of [noun] [noun] at a time | 13 |
|
| 5 | of [noun sg] [noun] [prep] a time | 11 |
|
| 6 | of [noun] [noun sg] [prep] a time | 7 |
|
| 7 | of [noun] [noun pl] [prep] a time | 6 |
|
