| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be thought that | 349 |
|
| 2 | it is thought [that] | 202 |
|
| 3 | it was thought [that] | 120 |
|
| 4 | it 's thought [that] | 16 |
|
| 5 | it be thought [that] | 8 |
|
