| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [conj] | 109164 |
|
| 2 | [vb past] [subord] | 16682 |
|
| 3 | [verb] although | 375 |
|
| 4 | [vb past] although | 45 |
|
