| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [modal v] to be known [prep] | 16 |
|
| 2 | [Wh det] used to be known [prep] | 16 |
|
| 3 | [Wh det] [vb mod] to be known [prep] | 16 |
|
| 4 | [Wh det] used to be known [prep] | 16 |
|
| 5 | [Wh det] [modal v] to be known as | 15 |
|
| 6 | what [modal v] to be known [prep] | 12 |
|
