| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are at [noun] | 738 |
|
| 2 | [be] at work | 430 |
|
| 3 | be at work | 430 |
|
| 4 | [am/are] at work | 92 |
|
| 5 | are [prep] work | 81 |
|
