| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [verb] [noun sg] for | 14 |
|
| 2 | who had been [verb] [noun sg] for | 9 |
|
| 3 | who have been [v-ing] [noun sg] for | 8 |
|
| 4 | who have been [vb pp] [noun sg] for | 6 |
|
