| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [conj] it be [adv] difficult | 55 |
|
| 2 | [verb] [conj] it [be] [adv] difficult | 55 |
|
| 3 | [verb] [conj] it [be] [adv] difficult | 52 |
|
| 4 | [verb] [that] it [be] [adv] difficult | 43 |
|
| 5 | [verb] that it [be] [adv] difficult | 43 |
|
| 6 | [verb] that it [be] [adv] difficult | 43 |
|
| 7 | [verb] [conj] it [is] [adv] difficult | 42 |
|
| 8 | [verb] [conj] it is [adv] difficult | 32 |
|
| 9 | [verb] [conj] it [be] very difficult | 17 |
|
| 10 | [verb] [conj] it [be] very difficult | 17 |
|
| 11 | [vb pp] [conj] it [be] [adv] difficult | 14 |
|
| 12 | [verb] [conj] it was [adv] difficult | 13 |
|
| 13 | [verb] [conj] it [was/were] [adv] difficult | 13 |
|
| 14 | [vb past] [conj] it [be] [adv] difficult | 11 |
|
| 15 | [verb] [conj] it 's [adv] difficult | 10 |
|
| 16 | [vb -s] [conj] it [be] [adv] difficult | 9 |
|
| 17 | [verb] [coord] it [be] [adv] difficult | 8 |
|
| 18 | [vb infin] [conj] it [be] [adv] difficult | 8 |
|
| 19 | [verb] [conj] it [be] extremely difficult | 7 |
|
| 20 | [verb] [conj] it [be] extremely difficult | 7 |
|
| 21 | [verb] [conj] it [be] often difficult | 5 |
|
| 22 | [verb] [conj] it [be] often difficult | 5 |
|
| 23 | [verb] [conj] it [be] more difficult | 5 |
|
| 24 | [to-vb] [conj] it [be] [adv] difficult | 5 |
|
| 25 | [vb base] [conj] it [be] [adv] difficult | 5 |
|
| 26 | [verb] [conj] it [be] more difficult | 5 |
|
