| No | Pattern | Freq | Relations |
|---|---|---|---|
| 31 | it difficult for [pron] [to-vb] [art] | 5 |
|
| 32 | it difficult for [pron] [to-vb] [adv] | 5 |
|
| 33 | it difficult for [pron] [to-vb] [noun sg] | 5 |
|
| 34 | it difficult for [pron] [to-vb] [adj] | 5 |
|
| 35 | it difficult for [pron] [to-vb] [art] | 5 |
|
