| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [vb pp] [prep] [noun] which | 128 |
|
| 2 | [be] [vb pp] in [noun] which | 118 |
|
| 3 | [was/were] [vb pp] in [noun] [pron] | 74 |
|
| 4 | [was/were] [verb] in [noun] which | 34 |
|
