| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is difficult to make | 5 |
|
| 2 | it is [adv] difficult to make | 26 |
|
| 3 | it is [adv] difficult to make | 25 |
|
| 4 | it is very difficult to make | 10 |
|
| 5 | it is very difficult to make | 10 |
|
| 6 | it is difficult to make [art] | 7 |
|
| 7 | it is difficult to make [art] | 7 |
|
| 8 | it is difficult to make a | 5 |
|
| 9 | it is difficult to make [noun] | 5 |
|
