| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficulty in [v-ing] [prep] the | 32 |
|
| 2 | difficulty in [v-ing] with the | 10 |
|
| 3 | difficulty in [v-ing] to the | 7 |
|
| 4 | difficulty in getting [prep] the | 5 |
|
