| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is [adj] [prep] | 1739 |
|
| 2 | [conj] it is [adj] [prep] | 1564 |
|
| 3 | [conj] it be difficult [prep] | 102 |
|
| 4 | [conj] it [be] difficult [prep] | 102 |
|
| 5 | [conj] it [is] difficult [prep] | 78 |
|
| 6 | [conj] [pers pn] is difficult [prep] | 67 |
|
| 7 | [conj] it is difficult [prep] | 67 |
|
| 8 | [conj] [pron] is difficult [prep] | 67 |
|
| 9 | [conj] it is difficult [prep] | 67 |
|
