| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [adv] hard [to-vb] | 20 |
|
| 2 | not [adv] hard [to-vb] | 14 |
|
| 3 | [not/n't] too hard [to-vb] | 9 |
|
| 4 | [not/n't] too hard [to-vb] | 9 |
|
| 5 | n't [adv] hard [to-vb] | 6 |
|
| 6 | [not/n't] so hard [to-vb] | 5 |
|
| 7 | [not/n't] so hard [to-vb] | 5 |
|
