| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [Wh det] [vb mod] [prep] | 8 |
|
| 2 | be what [modal v] [prep] | 8 |
|
| 3 | be [Wh det] [modal v] to | 7 |
|
| 4 | be [Wh det] used [prep] | 6 |
|
| 5 | is [Wh det] [modal v] [prep] | 6 |
|
| 6 | be [Wh det] used [prep] | 6 |
|
