| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it difficult | 1488 |
|
| 2 | makes it [adj] | 1141 |
|
| 3 | make it difficult | 533 |
|
| 4 | [vb -s] it difficult | 203 |
|
| 5 | makes [pron] difficult | 156 |
|
| 6 | makes [pers pn] difficult | 155 |
|
| 7 | makes it difficult | 148 |
|
