| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been working [prep] this | 19 |
|
| 2 | have been working on this | 11 |
|
| 3 | have been working on this | 11 |
|
| 4 | 've been working [prep] this | 5 |
|
| 5 | has been working [prep] this | 5 |
|
| 6 | have been working in this | 5 |
|
| 7 | have been working in this | 5 |
|
