| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adj] for [pron] [verb] | 451 |
|
| 2 | [be] difficult for [pron] [verb] | 117 |
|
| 3 | [is] difficult for [pron] [verb] | 58 |
|
| 4 | [is] difficult [prep] [pron] [verb] | 58 |
|
| 5 | [is] difficult [prep] [pron] [verb] | 58 |
|
