| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] at | 2082 |
|
| 2 | have been working [prep] | 484 |
|
| 3 | have been working [prep] | 484 |
|
| 4 | have been [v-ing] at | 446 |
|
| 5 | have been work at | 45 |
|
| 6 | have be working at | 41 |
|
| 7 | have [been] working at | 41 |
|
| 8 | have [be] working at | 41 |
|
| 9 | have been working at | 41 |
|
| 10 | [verb] been working at | 41 |
|
