| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [ex0] [modal v] [verb] be about [adj] | 7 |
|
| 2 | [ex0] [vb mod] [verb] be about [adj] | 7 |
|
| 3 | [ex0] must [verb] be about [adj] | 6 |
|
| 4 | [ex0] must [verb] be about [adj] | 6 |
|
