| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it [adv] difficult understand | 12 |
|
| 2 | find it [adv] difficult understand | 10 |
|
| 3 | [vb base] it [adv] difficult understand | 6 |
|
| 4 | find it [adv] difficult understand | 6 |
|
| 5 | it [be] [adv] difficult understand | 19 |
|
| 6 | it be [adv] difficult understand | 19 |
|
| 7 | it [is] [adv] difficult understand | 18 |
|
| 8 | it is [adv] difficult understand | 17 |
|
