| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [that] it is difficult [prep] | 6 |
|
| 2 | [noun] [that] it is difficult [prep] | 5 |
|
| 3 | [that] it is [adv] difficult [prep] | 11 |
|
| 4 | [that] it is [adv] difficult [prep] | 11 |
|
| 5 | [that] it is very difficult [prep] | 6 |
|
| 6 | [that] it is very difficult [prep] | 6 |
|
| 7 | [that] it is difficult [to-vb] [prep] | 12 |
|
| 8 | [that] it is difficult [verb] [prep] | 12 |
|
| 9 | [that] it is difficult [prep] [pron] | 7 |
|
| 10 | [that] it is difficult [prep] [pers pn] | 5 |
|
| 11 | [that] it is difficult [prep] [adj] | 5 |
|
