| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] for some time | 64 |
|
| 2 | [been] [vb pp] for some time | 64 |
|
| 3 | [been] known for some time | 16 |
|
| 4 | [been] recognised for some time | 6 |
|
