| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is difficult [verb] [adj] [noun pl] | 34 |
|
| 2 | is difficult [verb] any [adj] | 18 |
|
| 3 | difficult [verb] any [adj] [noun pl] | 11 |
|
| 4 | is [verb] any [adj] [noun pl] | 5 |
|
