| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [verb] on | 86 |
|
| 2 | who had been [verb] on | 52 |
|
| 3 | who have been [vb pp] on | 48 |
|
| 4 | who have been [v-ing] on | 38 |
|
| 5 | who has been [verb] on | 13 |
|
| 6 | who have been [verb] on | 13 |
|
| 7 | who have been working on | 10 |
|
| 8 | who have been work on | 10 |
|
| 9 | who 'd been [verb] on | 5 |
|
