| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] be once [art] | 24 |
|
| 2 | [det] be once a | 19 |
|
| 3 | [det] was once [art] | 19 |
|
| 4 | [det] be once a | 17 |
|
| 5 | this be once [art] | 16 |
|
| 6 | that be once [art] | 7 |
|
| 7 | [det] be once the | 5 |
|
| 8 | [det] be once the | 5 |
|
