| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who has been [verb] [noun sg] [prep] | 16 |
|
| 2 | who has been [v-ing] [noun sg] [prep] | 10 |
|
| 3 | who has been [vb pp] [noun sg] [prep] | 6 |
|
