| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been go on for | 91 |
|
| 2 | have been going on for | 90 |
|
| 3 | has been go on for | 37 |
|
| 4 | had been go on for | 23 |
|
| 5 | 's been go on for | 16 |
|
| 6 | have been go on for | 9 |
|
