| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [vb mod] be difficult | 92 |
|
| 2 | [noun pl] can be difficult | 30 |
|
| 3 | [noun pl] can be difficult | 30 |
|
| 4 | [noun pl] may be difficult | 22 |
|
| 5 | [noun pl] may be difficult | 22 |
|
| 6 | [noun pl] would be difficult | 18 |
|
| 7 | [noun pl] would be difficult | 18 |
|
| 8 | [noun pl] will be difficult | 16 |
|
| 9 | [noun pl] will be difficult | 16 |
|
| 10 | [noun pl] could be difficult | 5 |
|
| 11 | [noun pl] could be difficult | 5 |
|
