| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | believe to have been [verb] [prep] [adj] | 10 |
|
| 2 | believe to have been [vb pp] [prep] [adj] | 9 |
|
| 3 | believed to have been [verb] [prep] [adj] | 9 |
|
| 4 | believe to have been [verb] [prep] [adj] | 7 |
|
