| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [adv] been [verb] | 18761 |
|
| 2 | have once [be] [verb] | 74 |
|
| 3 | [verb] once been [verb] | 74 |
|
| 4 | have once [been] [verb] | 74 |
|
| 5 | have once be [verb] | 74 |
|
