| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [vb pp] at [art] time | 183 |
|
| 2 | [was/were] [vb pp] [adv prt] at [art] | 180 |
|
| 3 | [vb pp] [adv prt] at [art] time | 35 |
|
| 4 | [was/were] [adv prt] at [art] time | 14 |
|
