| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [v-ing] [art] [noun sg] | 835 |
|
| 2 | [vb base] once [art] [noun sg] | 42 |
|
| 3 | once [v-ing] [art] [noun sg] | 25 |
|
| 4 | [vb base] once [v-ing] [art] | 6 |
|
