| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] difficult | 1036 |
|
| 2 | [vb mod] be difficult | 1036 |
|
| 3 | [vb mod] be difficult | 1036 |
|
| 4 | would [be] difficult | 332 |
|
| 5 | may [be] difficult | 228 |
|
| 6 | can [be] difficult | 203 |
|
| 7 | will [be] difficult | 180 |
|
| 8 | might [be] difficult | 42 |
|
| 9 | could [be] difficult | 23 |
|
| 10 | must [be] difficult | 18 |
|
| 11 | 'll [be] difficult | 6 |
|
