| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] on for | 109 |
|
| 2 | have been going on for | 90 |
|
| 3 | has been [v-ing] on for | 41 |
|
| 4 | had been [v-ing] on for | 27 |
|
| 5 | 's been [v-ing] on for | 17 |
|
| 6 | have been [v-ing] on for | 12 |
|
| 7 | have been working on for | 10 |
|
| 8 | 've been [v-ing] on for | 7 |
|
