| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] question be [subord] | 139 |
|
| 2 | key [noun] be [subord] | 11 |
|
| 3 | key question be [conj] | 8 |
|
| 4 | key question [be] [subord] | 8 |
|
