| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adj] time [adv] | 239 |
|
| 2 | [vb infin] at [adj] [adv] | 152 |
|
| 3 | [vb infin] at [adj] time | 139 |
|
| 4 | [vb infin] [adj] time [adv] | 74 |
|
