| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv prt] at the [adj] | 479 |
|
| 2 | [adv prt] at the [adj] time | 123 |
|
| 3 | [vb past] at the [adj] time | 80 |
|
| 4 | [vb past] [adv prt] at [adj] time | 16 |
|
| 5 | [vb past] [adv prt] at the time | 11 |
|
| 6 | [vb past] [adv prt] the [adj] time | 6 |
|
