| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [prep] [art] [adj] | 3197 |
|
| 2 | once [prep] [art] [adj] | 234 |
|
| 3 | [prep] once [prep] [art] | 158 |
|
| 4 | [prep] once [art] [adj] | 65 |
|
| 5 | [prep] once [prep] [adj] | 32 |
|
