| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] have been [vb pp] [prep] a | 26 |
|
| 2 | [vb -s] have been [verb] [prep] a | 26 |
|
| 3 | [vb -s] to have been [verb] [prep] a | 25 |
|
| 4 | seems have been [verb] [prep] a | 13 |
|
| 5 | appears have been [verb] [prep] a | 11 |
|
| 6 | [vb -s] have been [verb] by a | 8 |
|
| 7 | [vb -s] have been [verb] by a | 8 |
|
| 8 | [vb -s] have been [verb] as a | 6 |
|
| 9 | [vb -s] have been [verb] as a | 6 |
|
