| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adv] difficult [conj] | 42 |
|
| 2 | it [is] [adv] difficult [conj] | 31 |
|
| 3 | it [be] [adv] difficult [subord] | 25 |
|
| 4 | it is [adv] difficult [conj] | 18 |
|
| 5 | it [be] [adv] difficult [coord] | 17 |
|
| 6 | it [be] [adv] difficult and | 15 |
|
| 7 | it [be] [adv] difficult and | 15 |
|
| 8 | it [be] very difficult [conj] | 13 |
|
| 9 | it 's [adv] difficult [conj] | 13 |
|
| 10 | it was [adv] difficult [conj] | 11 |
|
| 11 | it [be] more difficult [conj] | 11 |
|
| 12 | it [was/were] [adv] difficult [conj] | 11 |
|
| 13 | it [be] [adv] difficult than | 7 |
|
| 14 | it [be] [adv] difficult than | 7 |
|
| 15 | it [be] [adv] difficult because | 5 |
|
| 16 | it [be] [adv] difficult because | 5 |
|
