| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] difficult it is [verb] [pron] | 11 |
|
| 2 | [adv] difficult it is [verb] [pron] | 6 |
|
| 3 | more difficult it is [verb] [pron] | 6 |
|
| 4 | more difficult it is [verb] [pron] | 6 |
|
| 5 | [Wh adv] difficult it is [verb] [pron] | 5 |
|
