| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] as difficult as it | 7 |
|
| 2 | [adv] as difficult [conj] it | 7 |
|
| 3 | [adv] as difficult as it | 7 |
|
| 4 | [adv] as difficult [subord] it | 7 |
|
| 5 | not as difficult [conj] it | 6 |
|
| 6 | [not/n't] as difficult [conj] it | 6 |
|
| 7 | not as difficult [conj] it | 6 |
|
