| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] at [noun] | 238 |
|
| 2 | it [be] at [noun sg] | 121 |
|
| 3 | [pron] [be] at work | 118 |
|
| 4 | [pers pn] [be] at work | 95 |
|
| 5 | it [be] [prep] work | 10 |
|
| 6 | it [be] [prep] work | 10 |
|
| 7 | it [be] at work | 7 |
|
| 8 | it [be] at work | 7 |
|
| 9 | it [be] at work | 7 |
|
