| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] not [be] forgotten | 58 |
|
| 2 | it [vb mod] not [be] forget | 58 |
|
| 3 | it [vb mod] not be forget | 58 |
|
| 4 | it should not [be] forget | 38 |
|
| 5 | it must not [be] forget | 19 |
|
