| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | once [prep] [art] [noun] [pron] [vb mod] | 19 |
|
| 2 | once [prep] [art] [noun sg] [pron] [vb mod] | 19 |
|
| 3 | [adv] [prep] [art] time [pron] [vb mod] | 17 |
|
| 4 | [adv] [prep] [art] time [pron] [vb mod] | 16 |
|
| 5 | once [prep] [art] time [pron] [vb mod] | 7 |
|
| 6 | once [prep] [art] time [pron] [vb mod] | 7 |
|
| 7 | once [prep] [art] time [pron] [modal v] | 7 |
|
