| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] difficult for [pers pn] [to-vb] | 13 |
|
| 2 | is [adv] difficult for [pron] [to-vb] | 13 |
|
| 3 | is [adv] difficult for [pron] [to-vb] | 13 |
|
| 4 | is very difficult for [pron] [to-vb] | 8 |
|
| 5 | is very difficult for [pron] [to-vb] | 8 |
|
