| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] working [prep] | 484 |
|
| 2 | have [been] working on | 47 |
|
| 3 | have [been] on [prep] | 41 |
|
| 4 | [been] working on [prep] | 20 |
|
