| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] for some time | 37 |
|
| 2 | has been [vb pp] [prep] some time | 27 |
|
| 3 | has been [v-ing] [prep] some time | 12 |
|
| 4 | has been known [prep] some time | 10 |
|
| 5 | has been know [prep] some time | 10 |
|
| 6 | has been recognise [prep] some time | 5 |
|
| 7 | has been recognised [prep] some time | 5 |
|
