| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult for [pers pn] [verb] [adj] [noun] | 24 |
|
| 2 | difficult [prep] [pers pn] [to-vb] [adj] [noun] | 24 |
|
| 3 | difficult [prep] [pers pn] [verb] [adj] [noun] | 24 |
|
| 4 | difficult [prep] [pers pn] [verb] [adj] [noun] | 14 |
|
| 5 | difficult [prep] [pers pn] [verb] [adj] [noun sg] | 13 |
|
| 6 | difficult [prep] them [verb] [adj] [noun] | 11 |
|
| 7 | difficult [prep] [pers pn] [verb] [adj] [noun pl] | 11 |
|
| 8 | difficult [prep] [pers pn] [verb] [det] [noun] | 10 |
|
