| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | although it is [adv] clear | 24 |
|
| 2 | although it is not clear | 20 |
|
| 3 | although it is [not/n't] clear | 20 |
|
| 4 | although it is not clear | 20 |
|
| 5 | although it is clear that | 14 |
|
| 6 | although it is clear [that] | 14 |
|
| 7 | although it is clear [conj] | 14 |
|
| 8 | although it is clear that | 14 |
|
