| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] difficult [prep] [indef pn] [to-vb] | 10 |
|
| 2 | be difficult [prep] [indef pn] [to-vb] | 10 |
|
| 3 | [be] difficult for [indef pn] [to-vb] | 10 |
|
| 4 | [be] difficult for [indef pn] [to-vb] | 10 |
|
| 5 | [be] difficult [prep] anyone [to-vb] | 9 |
|
