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