| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [adj] it is [prep] | 64 |
|
| 2 | [verb] [adv] difficult it [be] [prep] | 22 |
|
| 3 | [verb] [adv] difficult it be [prep] | 22 |
|
| 4 | [verb] [adv] difficult it is [prep] | 15 |
|
| 5 | [verb] [adv] difficult [pron] is [prep] | 15 |
|
| 6 | [verb] [adv] difficult [pers pn] is [prep] | 15 |
|
| 7 | [verb] [adv] difficult it [is] [prep] | 15 |
|
