| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [det] [prep] | 150 |
|
| 2 | have been [det] doubt | 14 |
|
| 3 | been [det] doubt [prep] | 13 |
|
| 4 | have [det] doubt [prep] | 11 |
|
