| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have go ahead | 63 |
|
| 2 | have gone ahead | 56 |
|
| 3 | had go ahead | 28 |
|
| 4 | have go ahead | 13 |
|
| 5 | have go ahead | 10 |
|
| 6 | have to go ahead | 7 |
|
| 7 | has go ahead | 6 |
|
