| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had once [vb pp] i | 8 |
|
| 2 | [vb past] once [vb pp] i | 8 |
|
| 3 | [verb] once [vb pp] i | 8 |
|
| 4 | have once [vb pp] i | 8 |
|
| 5 | once [vb pp] [prep] i | 15 |
|
| 6 | once [vb pp] [prep] i | 15 |
|
| 7 | once [vb pp] to i | 12 |
|
| 8 | once [vb pp] to i | 12 |
|
