| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adj] time a [noun sg] | 25 |
|
| 2 | at [det] time a [noun sg] | 15 |
|
| 3 | at one time a [noun sg] | 10 |
|
| 4 | at that time a [noun sg] | 10 |
|
| 5 | at that time a [noun sg] | 10 |
|
| 6 | at one time a [noun sg] | 10 |
|
| 7 | at [num] time a [noun sg] | 10 |
|
