| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adj] | 38935 |
|
| 2 | it is [adj] | 34164 |
|
| 3 | it [be] hard | 1827 |
|
| 4 | it be hard | 1827 |
|
| 5 | it [is] hard | 1384 |
|
| 6 | it is hard | 848 |
|
| 7 | [pron] is hard | 847 |
|
