| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] have been [verb] | 896 |
|
| 2 | [noun prp] have [verb] a | 490 |
|
| 3 | have been [verb] a | 320 |
|
| 4 | [noun prp] have been a | 12 |
|
