| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] not be forgotten [conj] | 45 |
|
| 2 | it [vb mod] not be forget [conj] | 45 |
|
| 3 | it [vb mod] not be forget [that] | 44 |
|
| 4 | it [vb mod] not be forget that | 44 |
|
| 5 | it [vb mod] not be forget that | 44 |
|
| 6 | it should not be forget [conj] | 32 |
|
| 7 | it must not be forget [conj] | 12 |
|
