| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] have been [verb] a | 226 |
|
| 2 | have been [verb] at a | 152 |
|
| 3 | [noun prp] have been [verb] at | 125 |
|
| 4 | [noun prp] have [verb] at a | 17 |
|
