| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] found that [noun pl] | 18 |
|
| 2 | it be found that [noun pl] | 18 |
|
| 3 | it was found that [noun pl] | 15 |
|
| 4 | it [was/were] found that [noun pl] | 15 |
|
