| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [noun] | 2601447 |
|
| 2 | once [art] [noun] | 2240 |
|
| 3 | [prep] once [art] | 261 |
|
| 4 | [prep] once [noun] | 112 |
|
