| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] [prep] some time | 74 |
|
| 2 | [been] [vb pp] for some time | 64 |
|
| 3 | [been] known [prep] some time | 16 |
|
| 4 | [been] [vb pp] at some time | 10 |
|
| 5 | [been] recognised [prep] some time | 6 |
|
| 6 | [been] used [prep] some time | 5 |
|
