| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] such [noun pl] | 88 |
|
| 2 | be difficult [verb] [noun pl] | 86 |
|
| 3 | be difficult [verb] such | 18 |
|
| 4 | difficult [verb] such [noun pl] | 13 |
|
