| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] it be hard | 43 |
|
| 2 | [vb base] it [is] hard | 41 |
|
| 3 | [vb base] it 's hard | 31 |
|
| 4 | know it [be] hard | 17 |
|
| 5 | think it [be] hard | 11 |
|
| 6 | [vb base] it is hard | 10 |
|
