| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which has been [verb] for [noun] | 23 |
|
| 2 | which [vb -s] been [vb pp] for [noun] | 21 |
|
| 3 | which [vb -s] been [verb] for [noun sg] | 13 |
|
| 4 | which [vb -s] been [verb] for [noun pl] | 8 |
|
