| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have to be clear [prep] | 7 |
|
| 2 | have to be clear [prep] | 7 |
|
| 3 | have to be clear about | 5 |
|
| 4 | has to be clear [prep] | 5 |
|
| 5 | have to be clear about | 5 |
|
