| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [adv] [prep] a | 355 |
|
| 2 | [subord] [adv] [prep] a | 281 |
|
| 3 | [subord] once [prep] [art] | 52 |
|
| 4 | [conj] once [prep] a | 33 |
|
| 5 | [subord] once [prep] a | 13 |
|
| 6 | [subord] once [prep] a | 13 |
|
