| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [verb] to | 223 |
|
| 2 | [pron] have been introduce to | 22 |
|
| 3 | [Wh pn] have been introduce to | 6 |
|
| 4 | who have [been] introduce to | 6 |
|
| 5 | who have [be] introduce to | 6 |
|
| 6 | who [verb] been introduce to | 6 |
|
| 7 | who have been introduce [prep] | 6 |
|
| 8 | who have been introduce to | 6 |
|
| 9 | who have be introduce to | 6 |
|
