| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] about by [noun] | 14 |
|
| 2 | be brought about by [noun] | 12 |
|
| 3 | be [vb pp] about by [noun sg] | 9 |
|
| 4 | be [vb pp] about by [noun pl] | 5 |
|
