| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] [prep] | 55525 |
|
| 2 | have once [verb] [prep] | 168 |
|
| 3 | have once been [verb] | 74 |
|
| 4 | once been [verb] [prep] | 49 |
|
| 5 | have once been [prep] | 11 |
|
