| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] difficult for [noun] | 24 |
|
| 2 | it is [adv] difficult for [noun] | 24 |
|
| 3 | it is [adv] difficult for [noun] | 24 |
|
| 4 | it is [adv] difficult for [noun pl] | 15 |
|
| 5 | it is [adv] difficult for [noun sg] | 5 |
|
| 6 | it is more difficult for [noun] | 5 |
|
