| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that it be [adv] difficult [verb] | 74 |
|
| 2 | [conj] it be often difficult [verb] | 25 |
|
| 3 | that it be often [adj] [verb] | 22 |
|
| 4 | [that] it be often difficult [verb] | 11 |
|
| 5 | that it be often difficult [verb] | 11 |
|
| 6 | that it [be] often difficult [verb] | 11 |
|
| 7 | that [pron] be often difficult [verb] | 11 |
|
