| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [prep] a possible | 22 |
|
| 2 | have been [vb pp] [prep] a possible | 22 |
|
| 3 | have been [vb pp] as a possible | 20 |
|
| 4 | have been [vb pp] as a possible | 20 |
|
| 5 | has been [vb pp] [prep] a possible | 14 |
|
| 6 | had been [vb pp] [prep] a possible | 5 |
|
| 7 | have been suggested [prep] a possible | 5 |
|
