| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] easy [to-vb] | 866 |
|
| 2 | is [not/n't] [adv] [to-vb] | 302 |
|
| 3 | is [not/n't] easy [to-vb] | 271 |
|
| 4 | is [not/n't] [adv] easy | 253 |
|
| 5 | [not/n't] [adv] easy [to-vb] | 253 |
|
