| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [adj] [to-vb] | 3056 |
|
| 2 | it be hard [to-vb] | 1365 |
|
| 3 | it [be] hard [to-vb] | 1365 |
|
| 4 | it [is] hard [to-vb] | 1070 |
|
| 5 | [pron] 's hard [to-vb] | 381 |
|
| 6 | it 's hard [verb] | 380 |
|
