| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] difficult [verb] | 2354 |
|
| 2 | [pron] [be] difficult [to-vb] | 2339 |
|
| 3 | [pron] [be] [adj] to find | 748 |
|
| 4 | [pron] [be] [adj] to find | 731 |
|
| 5 | [pron] [be] difficult find | 61 |
|
| 6 | [pron] [be] difficult to find | 60 |
|
