| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [verb] a | 36392 |
|
| 2 | [subord] [verb] a | 4319 |
|
| 3 | when [verb] [art] | 1914 |
|
| 4 | when [verb] a | 836 |
|
