| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be working on at the [noun] | 9 |
|
| 2 | [be] working on at the [noun] | 9 |
|
| 3 | [am/are] working on at the [noun] | 7 |
|
| 4 | 're working on at the [noun] | 6 |
|
