| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] [prep] some time | 27 |
|
| 2 | [vb -s] been [vb pp] for some time | 26 |
|
| 3 | [vb -s] been known [prep] some time | 11 |
|
| 4 | [vb -s] been recognised [prep] some time | 5 |
|
