| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be going on at | 9 |
|
| 2 | have [be] going on at | 9 |
|
| 3 | have been going on at | 9 |
|
| 4 | have [been] going on at | 9 |
|
| 5 | has [be] going on at | 6 |
|
