| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [adv] difficult [conj] | 15 |
|
| 2 | it 's [adv] difficult [conj] | 13 |
|
| 3 | it 's [adv] difficult [subord] | 10 |
|
| 4 | it 's very difficult [conj] | 8 |
|
| 5 | it 's very difficult [conj] | 8 |
|
| 6 | it 's [adv] difficult and | 5 |
|
| 7 | it 's [adv] difficult and | 5 |
|
| 8 | it 's [adv] difficult [coord] | 5 |
|
