| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that it be [adv] difficult | 99 |
|
| 2 | that it [be] [adv] difficult | 99 |
|
| 3 | that it [be] [adv] difficult | 99 |
|
| 4 | that it [is] [adv] difficult | 79 |
|
| 5 | that it is [adv] difficult | 66 |
|
| 6 | that it [be] very difficult | 34 |
|
| 7 | that it [was/were] [adv] difficult | 20 |
|
| 8 | that it was [adv] difficult | 20 |
|
| 9 | that it 's [adv] difficult | 13 |
|
| 10 | that it [be] often difficult | 12 |
|
| 11 | that it [be] extremely difficult | 10 |
|
| 12 | that it [be] more difficult | 9 |
|
