| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] at time [prep] [noun] | 8 |
|
| 2 | be [verb] at time [prep] [noun] | 8 |
|
| 3 | be [verb] at time [prep] [noun sg] | 6 |
|
| 4 | be [verb] at time of [noun] | 5 |
|
