| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [adv] been | 11148 |
|
| 2 | have once been | 403 |
|
| 3 | [verb] once been | 403 |
|
| 4 | [vb past] once been | 384 |
|
| 5 | had once [been] | 375 |
|
| 6 | had once be | 375 |
|
| 7 | had once [be] | 375 |
|
