| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it is [adj] | 3698 |
|
| 2 | [subord] it is [adj] | 3331 |
|
| 3 | [conj] it is difficult | 483 |
|
| 4 | [subord] it be difficult | 197 |
|
| 5 | [subord] it [be] difficult | 197 |
|
| 6 | [subord] it [is] difficult | 164 |
|
| 7 | [subord] [pers pn] is difficult | 147 |
|
| 8 | [subord] it is difficult | 147 |
|
| 9 | [subord] [pron] is difficult | 147 |
|
| 10 | [subord] it is difficult | 147 |
|
