| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it [be] obvious that | 25 |
|
| 2 | but it be obvious that | 25 |
|
| 3 | but it [was/were] obvious that | 19 |
|
| 4 | but it was obvious that | 19 |
|
| 5 | but it [is] obvious that | 6 |
|
