| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [prep] [det] doubt | 6 |
|
| 2 | have been [prep] [det] doubt | 6 |
|
| 3 | been [vb pp] [prep] [det] doubt | 6 |
|
| 4 | been [verb] [prep] [det] doubt | 6 |
|
