| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be believed | 539 |
|
| 2 | it [be] believed | 539 |
|
| 3 | it [is] believed | 382 |
|
| 4 | it is believed | 338 |
|
| 5 | it [was/were] believed | 156 |
|
| 6 | it was believed | 155 |
|
| 7 | it 's believed | 44 |
|
