| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficulty [prep] [verb] to the | 13 |
|
| 2 | difficulty [prep] [v-ing] to the | 13 |
|
| 3 | difficulty [prep] [verb] to the | 13 |
|
| 4 | difficulty in [verb] to the | 11 |
|
| 5 | difficulty in [verb] to the | 11 |
|
| 6 | difficulty [prep] [verb] to the | 9 |
|
| 7 | difficulty [prep] adjust to the | 5 |
|
| 8 | difficulty [prep] adjusting to the | 5 |
|
