| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to make it difficult | 11 |
|
| 2 | [noun] to make it difficult | 7 |
|
| 3 | [v-ing] to make it difficult | 5 |
|
| 4 | to make it [adv] difficult | 20 |
|
| 5 | to make it [adv] difficult | 20 |
|
| 6 | to make it more difficult | 9 |
|
| 7 | to make it more difficult | 9 |
|
| 8 | to make it difficult [prep] | 14 |
|
| 9 | to make it difficult [prep] | 14 |
|
| 10 | to make it difficult for | 13 |
|
| 11 | to make it difficult for | 13 |
|
| 12 | to make it difficult [verb] | 7 |
|
| 13 | to make it difficult [to-vb] | 7 |
|
