| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] was once [art] | 70 |
|
| 2 | what was once [art] | 52 |
|
| 3 | [Wh det] was once a | 41 |
|
| 4 | [Wh det] was once a | 35 |
|
| 5 | [Wh det] was once the | 29 |
|
| 6 | [Wh det] was once the | 29 |
|
| 7 | which was once [art] | 18 |
|
| 8 | [Wh det] was once an | 6 |
|
