| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] at a [adj] time | 72 |
|
| 2 | [vb infin] [vb pp] at a [adj] | 38 |
|
| 3 | [vb infin] [vb pp] a [adj] time | 28 |
|
| 4 | [vb infin] [vb pp] at [adj] time | 13 |
|
| 5 | [vb infin] at a [adj] time | 6 |
|
