| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] difficult for [pers pn] [to-vb] | 22 |
|
| 2 | it more difficult for [pron] [to-vb] | 12 |
|
| 3 | it [adv] difficult for them [to-vb] | 11 |
|
| 4 | it [adv] difficult for they [to-vb] | 11 |
|
| 5 | it very difficult for [pron] [to-vb] | 5 |
|
