| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | once [verb] for a | 19 |
|
| 2 | once [vb pp] for a | 12 |
|
| 3 | once [adv] for a | 10 |
|
| 4 | once [adv] for a | 10 |
|
| 5 | once again for a | 5 |
|
| 6 | once again for a | 5 |
|
| 7 | once for a [noun sg] | 5 |
|
| 8 | once for a [noun] | 5 |
|
