| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must have a clear | 12 |
|
| 2 | [noun sg] must have a clear | 12 |
|
| 3 | must have a clear [noun sg] | 15 |
|
| 4 | must have a clear [noun] | 15 |
|
