| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] used [prep] be | 1773 |
|
| 2 | what [modal v] [prep] be | 186 |
|
| 3 | what used [prep] [be] | 139 |
|
| 4 | what used [prep] be | 139 |
|
| 5 | what used [prep] [be] | 139 |
|
