| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in [verb] [adv prt] [prep] the | 80 |
|
| 2 | difficulty in [verb] [prep] the | 47 |
|
| 3 | difficulty in [verb] [adv prt] [prep] | 17 |
|
| 4 | difficulty in [verb] [adv prt] the | 8 |
|
| 5 | difficulty [verb] [adv prt] [prep] the | 5 |
|
