| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [n mass] are [vb pp] by [noun sg] | 18 |
|
| 2 | [n mass] are [vb pp] by [noun pl] | 17 |
|
| 3 | people are [vb pp] by [noun] | 15 |
|
| 4 | staff are [vb pp] by [noun] | 6 |
|
