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