| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it should not be [vb pp] that | 79 |
|
| 2 | it should not be forgotten [that] | 32 |
|
| 3 | it should not be assumed [that] | 24 |
|
| 4 | it should not be thought [that] | 10 |
|
