| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it 's [adj] [verb] | 405 |
|
| 2 | [coord] it 's [adj] [verb] | 317 |
|
| 3 | [coord] it [be] difficult [verb] | 251 |
|
| 4 | [coord] it be difficult [verb] | 251 |
|
| 5 | [coord] it [is] difficult [verb] | 194 |
|
| 6 | [conj] it 's difficult [verb] | 53 |
|
| 7 | [coord] [pers pn] 's difficult [verb] | 34 |
|
| 8 | [coord] [pron] 's difficult [verb] | 34 |
|
| 9 | [coord] it 's difficult [verb] | 33 |
|
| 10 | [coord] it 's difficult [verb] | 33 |
|
