| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [adj] it is for | 75 |
|
| 2 | [adv] difficult it [be] for | 29 |
|
| 3 | [adv] difficult it be for | 29 |
|
| 4 | [adv] difficult it is [prep] | 24 |
|
| 5 | [adv] difficult [pron] is for | 20 |
|
| 6 | [adv] difficult it [is] for | 20 |
|
