| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [verb] a | 538 |
|
| 2 | although it [verb] a | 65 |
|
| 3 | although it [vb past] [verb] | 62 |
|
| 4 | although it [vb past] a | 29 |
|
