| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's a difficult [noun sg] | 36 |
|
| 2 | it 's a difficult question | 6 |
|
| 3 | it 's a difficult thing | 6 |
|
| 4 | it 's a difficult question | 6 |
|
| 5 | it 's a difficult thing | 6 |
|
