| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [modal v] [be] a [adj] | 177 |
|
| 2 | [verb] [modal v] [be] a [adj] | 114 |
|
| 3 | [verb] [Wh det] [modal v] [be] [adj] | 65 |
|
| 4 | [verb] [Wh det] [modal v] [be] a | 27 |
|
