| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | although we do not [vb infin] | 27 |
|
| 2 | although we did not [vb infin] | 15 |
|
| 3 | although we do not [vb infin] | 12 |
|
| 4 | although we do not know | 7 |
|
| 5 | although we do not have | 5 |
|
