| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] not be difficult [verb] | 22 |
|
| 2 | it [modal v] not be difficult [verb] | 22 |
|
| 3 | it should not be [adj] [verb] | 17 |
|
| 4 | it should [not/n't] be difficult [verb] | 6 |
|
| 5 | it should not be difficult [verb] | 6 |
|
| 6 | it should [adv] be difficult [verb] | 6 |
|
| 7 | it should not [be] difficult [verb] | 5 |
|
| 8 | it should not [be] difficult [verb] | 5 |
|
| 9 | it should not be difficult [verb] | 5 |
|
| 10 | [pron] should not be difficult [verb] | 5 |
|
| 11 | it should not be difficult [verb] | 5 |
|
