| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | although it is [verb] that | 42 |
|
| 2 | although it [is] [verb] that | 42 |
|
| 3 | although it [is] [vb pp] that | 42 |
|
| 4 | although it [is] acknowledge that | 5 |
|
| 5 | although it [is] acknowledged that | 5 |
|
