| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have once been [noun pl] | 14 |
|
| 2 | [verb] once been [noun pl] | 14 |
|
| 3 | [vb past] once been [noun pl] | 14 |
|
| 4 | had once been [noun pl] | 14 |
|
| 5 | once have been [noun pl] | 5 |
|
| 6 | once [verb] been [noun pl] | 5 |
|
| 7 | once been the [noun pl] | 5 |
|
| 8 | once been [art] [noun pl] | 5 |
|
| 9 | once been [art] [noun pl] | 5 |
|
| 10 | once been the [noun pl] | 5 |
|
