| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this [verb] been going on [prep] | 8 |
|
| 2 | this have been going on [prep] | 8 |
|
| 3 | this [vb -s] been going on [prep] | 7 |
|
| 4 | this has been going on [prep] | 7 |
|
| 5 | this [verb] been going on for | 7 |
|
| 6 | this [verb] been going on for | 7 |
|
