| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [indef pn] at [art] time | 10 |
|
| 2 | be [vb pp] [indef pn] at [art] time | 10 |
|
| 3 | be [verb] one at [art] time | 10 |
|
| 4 | be [verb] [indef pn] at a time | 10 |
|
