| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it is [adj] [prep] | 679 |
|
| 2 | [subord] it is [adj] [prep] | 615 |
|
| 3 | [conj] it is difficult [prep] | 67 |
|
| 4 | [subord] it be difficult [prep] | 29 |
|
| 5 | [subord] it [be] difficult [prep] | 29 |
|
| 6 | [subord] it [is] difficult [prep] | 23 |
|
| 7 | [subord] it is difficult [prep] | 20 |
|
| 8 | [subord] [pron] is difficult [prep] | 20 |
|
| 9 | [subord] [pers pn] is difficult [prep] | 20 |
|
| 10 | [subord] it is difficult [prep] | 20 |
|
