| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [vb pp] on [noun] | 3857 |
|
| 2 | [vb pp] on an [noun] | 409 |
|
| 3 | [was/were] [vb pp] an [noun] | 184 |
|
| 4 | [was/were] [vb pp] on an | 125 |
|
| 5 | [was/were] on an [noun] | 29 |
|
