| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must not be [vb pp] that | 29 |
|
| 2 | it must not be [verb] that | 29 |
|
| 3 | it must not be forgotten that | 12 |
|
| 4 | it must not be forget that | 12 |
|
| 5 | it must not be assume that | 8 |
|
| 6 | it must not be assumed that | 8 |
|
| 7 | it must not be thought that | 6 |
|
| 8 | it must not be think that | 6 |
|
