| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's been going on [prep] | 13 |
|
| 2 | it 's been going on [prep] | 13 |
|
| 3 | it 's been going on for | 11 |
|
| 4 | it 's been going on for | 11 |
|
