| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult [pers pn] is for [noun] | 11 |
|
| 2 | difficult [pers pn] is for [noun] | 11 |
|
| 3 | difficult it is for [noun] | 11 |
|
| 4 | difficult [pers pn] is for [noun pl] | 8 |
|
