| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there is difficulty in [verb] | 7 |
|
| 2 | there is difficulty [prep] [verb] | 7 |
|
| 3 | there is difficulty [prep] [verb] | 7 |
|
| 4 | there is difficulty in [verb] | 7 |
|
| 5 | there is difficulty [prep] [verb] | 7 |
|
| 6 | there is difficulty [prep] [v-ing] | 7 |
|
