| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been going on in | 24 |
|
| 2 | have be going on in | 24 |
|
| 3 | have [been] going on in | 24 |
|
| 4 | have [be] going on in | 24 |
|
| 5 | has [be] going on in | 10 |
|
| 6 | had [be] going on in | 8 |
|
