| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it is [adj] [prep] | 508 |
|
| 2 | [coord] it is [adj] [prep] | 447 |
|
| 3 | [conj] it is difficult [prep] | 67 |
|
| 4 | [coord] it [be] difficult [prep] | 41 |
|
| 5 | [coord] it be difficult [prep] | 41 |
|
| 6 | [coord] it [is] difficult [prep] | 31 |
|
| 7 | [coord] it is difficult [prep] | 26 |
|
| 8 | [coord] it is difficult [prep] | 26 |
|
| 9 | [coord] [pers pn] is difficult [prep] | 26 |
|
| 10 | [coord] [pron] is difficult [prep] | 26 |
|
