| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what must have be a [adj] | 14 |
|
| 2 | what must [verb] be a [adj] | 14 |
|
| 3 | what must [vb infin] be a [adj] | 14 |
|
| 4 | what must have be a [adj] | 14 |
|
| 5 | what must [verb] been a [adj] | 14 |
|
| 6 | what must [verb] be a [adj] | 13 |
|
