| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [prep] once [prep] [art] | 13 |
|
| 2 | [vb past] [adv] [prep] once [prep] [art] | 8 |
|
| 3 | [vb pp] [adv] [prep] once [prep] [art] | 5 |
|
| 4 | [adv] [prep] once [verb] [prep] [art] | 5 |
|
| 5 | [adv] [prep] once [prep] [art] [noun] | 13 |
|
| 6 | [adv] [prep] once [prep] [art] [noun sg] | 12 |
|
| 7 | [adv] [prep] once [prep] [art] [adj] | 7 |
|
| 8 | [adv] [prep] once [prep] [art] [adj] | 6 |
|
