| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which has been [verb] [noun] | 28 |
|
| 2 | which has been [v-ing] [noun] | 18 |
|
| 3 | which has been [verb] [noun sg] | 17 |
|
| 4 | which has been [vb pp] [noun] | 10 |
|
| 5 | which has been [verb] [noun pl] | 5 |
|
