| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been clear [prep] some time | 5 |
|
| 2 | [verb] been clear [prep] some time | 5 |
|
| 3 | [verb] been clear for some time | 5 |
|
| 4 | [verb] been clear for some time | 5 |
|
| 5 | have been clear [prep] some time | 5 |
|
