| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have not been [prep] [art] | 279 |
|
| 2 | have not yet been [prep] | 9 |
|
| 3 | not yet been [prep] [art] | 7 |
|
| 4 | have not yet been [art] | 6 |
|
