| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [verb] at the time | 69 |
|
| 2 | be [adv] [vb pp] at the time | 65 |
|
| 3 | be [adv] investigated at the [noun] | 7 |
|
| 4 | be [adv] investigated at the [noun sg] | 7 |
|
| 5 | be [adv] investigated [prep] the time | 6 |
|
| 6 | be [adv] investigated at the time | 6 |
|
| 7 | be [adv] investigated [prep] the time | 6 |
|
| 8 | be [adv] investigated at the time | 6 |
|
| 9 | be [adv] investigated at the time | 6 |
|
| 10 | [be] [adv] investigated at the time | 6 |
|
| 11 | be [adv] investigated at [art] time | 6 |
|
| 12 | be [adv] investigate at the time | 6 |
|
