| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [indef pn] at [art] time | 211 |
|
| 2 | one at [art] time | 194 |
|
| 3 | [indef pn] at a time | 191 |
|
| 4 | [indef pn] at the time | 19 |
|
