| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] difficult [verb] | 558 |
|
| 2 | it is also [adv] [verb] | 56 |
|
| 3 | it is also difficult [verb] | 16 |
|
| 4 | it is also [adv] difficult | 8 |
|
| 5 | is also [adv] difficult [verb] | 6 |
|
