| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] [conj] [prep] | 2846 |
|
| 2 | once [conj] [prep] | 299 |
|
| 3 | [adv prt] once [conj] | 51 |
|
| 4 | [adv prt] once [prep] | 26 |
|
