| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is also [adv] difficult [verb] | 6 |
|
| 2 | it is also [adv] difficult [to-vb] | 6 |
|
| 3 | it is also [adv] difficult [verb] | 6 |
|
| 4 | it is also [adv] difficult [verb] | 6 |
|
