| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] at a [adj] | 171 |
|
| 2 | [vb pp] at a [adj] time | 36 |
|
| 3 | [be] [vb pp] at a time | 24 |
|
| 4 | [be] [vb pp] a [adj] time | 8 |
|
