| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it [prep] [adj] [noun sg] | 1840 |
|
| 2 | [verb] it difficult [prep] [adj] | 35 |
|
| 3 | [verb] it difficult [prep] [noun sg] | 15 |
|
| 4 | it difficult [prep] [adj] [noun sg] | 6 |
|
