| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] on for some | 16 |
|
| 2 | have been [v-ing] on for some | 15 |
|
| 3 | have been go on for some | 13 |
|
| 4 | have been going on for some | 13 |
|
| 5 | had been [verb] on for some | 8 |
|
| 6 | has been [verb] on for some | 5 |
|
