| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been going on for some | 13 |
|
| 2 | have be going on for some | 13 |
|
| 3 | have [been] going on for some | 13 |
|
| 4 | have [be] going on for some | 13 |
|
| 5 | had [be] going on for some | 6 |
|
