| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been going on [prep] | 19 |
|
| 2 | it [verb] been going on [prep] | 19 |
|
| 3 | it [verb] been going on [prep] | 19 |
|
| 4 | it [verb] been going on for | 17 |
|
| 5 | it [verb] been going on for | 17 |
|
| 6 | it [vb -s] been going on [prep] | 16 |
|
| 7 | it 's been going on [prep] | 13 |
|
