| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] at | 20242 |
|
| 2 | [be] at time | 92 |
|
| 3 | [vb pp] at time | 77 |
|
| 4 | [be] [vb pp] time | 76 |
|
