| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [adj] [verb] [conj] | 365 |
|
| 2 | it 's [adj] [verb] [conj] | 327 |
|
| 3 | it be difficult [verb] [conj] | 233 |
|
| 4 | it [be] difficult [verb] [conj] | 233 |
|
| 5 | it [is] difficult [verb] [conj] | 179 |
|
| 6 | [pron] 's difficult [verb] [conj] | 15 |
|
| 7 | it 's difficult [verb] [conj] | 15 |
|
| 8 | [pers pn] 's difficult [verb] [conj] | 15 |
|
| 9 | it 's difficult [verb] [conj] | 15 |
|
