| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was once [art] | 322 |
|
| 2 | was once a | 226 |
|
| 3 | was once a | 201 |
|
| 4 | was once the | 95 |
|
| 5 | was once the | 95 |
|
| 6 | was once an | 25 |
|
