| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he must [vb infin] be about [adj] | 6 |
|
| 2 | he must have be about [adj] | 6 |
|
| 3 | he must [verb] be about [adj] | 6 |
|
| 4 | he must have be about [adj] | 6 |
|
