| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | although they do not [vb infin] | 48 |
|
| 2 | although they [vb past] not [vb infin] | 28 |
|
| 3 | although they did not [vb infin] | 28 |
|
| 4 | although they do not [vb infin] | 20 |
|
| 5 | although they [vb base] not [vb infin] | 20 |
|
| 6 | although they [verb] not know | 6 |
|
