| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | although it is not [verb] [conj] | 8 |
|
| 2 | although it is not [vb pp] [conj] | 6 |
|
| 3 | although it is not know [conj] | 6 |
|
| 4 | although it is not known [conj] | 6 |
|
| 5 | although it is not [verb] [subord] | 5 |
|
