| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be done at | 15 |
|
| 2 | have been done at | 15 |
|
| 3 | have [been] done at | 15 |
|
| 4 | have [be] done at | 6 |
|
| 5 | has [be] done at | 6 |
|
