| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] in [verb] [adv prt] the | 170 |
|
| 2 | difficulty in [verb] [adv] the | 16 |
|
| 3 | difficulty in [verb] [adv prt] [art] | 15 |
|
| 4 | difficulty [prep] [verb] [adv prt] the | 9 |
|
