| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | appear to have been [verb] [prep] a | 20 |
|
| 2 | appear have been [vb pp] [prep] a | 20 |
|
| 3 | appear have been [verb] [prep] a | 20 |
|
| 4 | appears have been [verb] [prep] a | 11 |
|
| 5 | appear have been [verb] by a | 5 |
|
| 6 | appear have been [verb] by a | 5 |
|
| 7 | appear have been [verb] [prep] a | 5 |
|
