| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [be] once [art] | 39 |
|
| 2 | [noun prp] [was/were] once [art] | 39 |
|
| 3 | [noun prp] be once [art] | 39 |
|
| 4 | [noun prp] was once [art] | 39 |
|
| 5 | [noun prp] [be] once a | 29 |
|
| 6 | [noun prp] [be] once a | 26 |
|
| 7 | [noun prp] [be] once the | 10 |
|
| 8 | [noun prp] [be] once the | 10 |
|
