| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficulties [verb] with [det] | 6 |
|
| 2 | difficulties [vb pp] with [det] | 5 |
|
| 3 | difficulties associate with [det] | 5 |
|
| 4 | difficulties associated with [det] | 5 |
|
