| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a | 59467 |
|
| 2 | [adv] [prep] a | 31892 |
|
| 3 | once [prep] [art] | 1150 |
|
| 4 | once [prep] [art] | 1150 |
|
| 5 | once [prep] a | 498 |
|
| 6 | once [prep] a | 474 |
|
| 7 | once [prep] a | 474 |
|
