| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [vb pp] at the time | 90 |
|
| 2 | [be] [adv] [vb pp] at the time | 90 |
|
| 3 | [was/were] [adv] [vb pp] at the time | 67 |
|
| 4 | [be] [adv] [vb pp] at the time | 65 |
|
| 5 | was [adv] [vb pp] at the time | 50 |
|
| 6 | [be] [not/n't] [vb pp] at the time | 25 |
|
| 7 | [be] not [vb pp] at the time | 25 |
|
| 8 | [be] not [vb pp] at the time | 21 |
|
| 9 | were [adv] [vb pp] at the time | 17 |
|
| 10 | [is] [adv] [vb pp] at the time | 7 |
|
| 11 | [be] widely [vb pp] at the time | 7 |
|
| 12 | is [adv] [vb pp] at the time | 7 |
|
| 13 | [be] widely [vb pp] at the time | 7 |
|
| 14 | [am/are] [adv] [vb pp] at the time | 7 |
|
| 15 | are [adv] [vb pp] at the time | 7 |
|
| 16 | [be] [adv] investigated at the time | 6 |
|
| 17 | [be] properly [vb pp] at the time | 5 |
|
| 18 | [been] [adv] [vb pp] at the time | 5 |
|
| 19 | [be] [adv] known at the time | 5 |
|
| 20 | [be] properly [vb pp] at the time | 5 |
|
| 21 | been [adv] [vb pp] at the time | 5 |
|
