| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have be [v-ing] for the | 10 |
|
| 2 | who have been [v-ing] for the | 10 |
|
| 3 | who have [been] [v-ing] for the | 10 |
|
| 4 | who has [be] [v-ing] for the | 5 |
|
