| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] once [been] [noun] | 38 |
|
| 2 | [vb past] once been [noun] | 38 |
|
| 3 | had once [been] [noun] | 38 |
|
| 4 | [vb past] once [been] [noun pl] | 14 |
|
| 5 | [vb past] once [been] [noun prp] | 14 |
|
| 6 | [vb past] once [been] [noun sg] | 10 |
|
