| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [verb] in | 28 |
|
| 2 | who have be [verb] in | 28 |
|
| 3 | who have be [vb pp] in | 19 |
|
| 4 | who have be [v-ing] in | 9 |
|
