| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] at a | 349 |
|
| 2 | [pron] [be] a time | 331 |
|
| 3 | [pron] at a time | 218 |
|
| 4 | [be] at a time | 29 |
|
