| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been [verb] in a | 26 |
|
| 2 | they have been [vb pp] in a | 23 |
|
| 3 | they have been [verb] in a | 9 |
|
| 4 | they had been [verb] in a | 9 |
|
