| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] to be sure | 83 |
|
| 2 | difficult to be sure | 30 |
|
| 3 | difficult to be sure | 30 |
|
| 4 | hard to be sure | 12 |
|
| 5 | hard to be sure | 12 |
|
| 6 | impossible to be sure | 9 |
|
| 7 | impossible to be sure | 9 |
|
| 8 | possible to be sure | 8 |
|
| 9 | possible to be sure | 8 |
|
| 10 | early to be sure | 6 |
|
| 11 | important to be sure | 6 |
|
| 12 | early to be sure | 6 |
|
| 13 | important to be sure | 6 |
|
