| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | exhibitions were [vb pp] [prep] last | 7 |
|
| 2 | exhibitions be [vb pp] [prep] last | 7 |
|
| 3 | exhibitions [be] [vb pp] in last | 7 |
|
| 4 | exhibitions [was/were] [vb pp] [prep] last | 7 |
|
