| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | very difficult [prep] [art] | 79 |
|
| 2 | very difficult [prep] [art] | 79 |
|
| 3 | very difficult [prep] [art] | 79 |
|
| 4 | very difficult for [art] | 61 |
|
| 5 | very difficult for [art] | 61 |
|
| 6 | very difficult [prep] the | 53 |
|
| 7 | very difficult [prep] the | 53 |
|
| 8 | very difficult [prep] a | 26 |
|
| 9 | very difficult [prep] a | 22 |
|
| 10 | very difficult in [art] | 7 |
|
| 11 | very difficult in [art] | 7 |
|
