| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it 's difficult [verb] [conj] | 5 |
|
| 2 | it 's [adv] difficult [verb] [conj] | 13 |
|
| 3 | it 's [adv] difficult [verb] [conj] | 11 |
|
| 4 | it 's very difficult [verb] [conj] | 8 |
|
| 5 | it 's very difficult [verb] [conj] | 8 |
|
| 6 | it 's difficult [verb] [conj] [pers pn] | 7 |
|
| 7 | it 's difficult [verb] [conj] [pron] | 7 |
|
