| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] for he [to-vb] | 397 |
|
| 2 | difficult for [pron] [to-vb] | 297 |
|
| 3 | difficult for he [verb] | 47 |
|
| 4 | difficult [prep] he [to-vb] | 46 |
|
