| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it was thought that [art] [noun] | 32 |
|
| 2 | it [was/were] thought that [art] [noun sg] | 28 |
|
| 3 | it [was/were] thought that the [noun] | 23 |
|
| 4 | it [was/were] thought that a [noun] | 9 |
|
