| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] have been [vb pp] | 1293 |
|
| 2 | have since been [vb pp] | 86 |
|
| 3 | [conj] have since [vb pp] | 32 |
|
| 4 | [conj] have since been | 16 |
|
