| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] it difficult [to-vb] [adj] [noun sg] | 8 |
|
| 2 | [vb past] it difficult [verb] [adj] [noun sg] | 8 |
|
| 3 | found it difficult [verb] [adj] [noun sg] | 5 |
|
| 4 | [vb past] it difficult [verb] [adj] [noun sg] | 5 |
|
