| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have once been [art] [adj] [noun sg] | 31 |
|
| 2 | have once [been] [art] [adj] [noun sg] | 31 |
|
| 3 | have once be [art] [adj] [noun sg] | 31 |
|
| 4 | had once [be] [art] [adj] [noun sg] | 28 |
|
| 5 | have once [be] a [adj] [noun sg] | 19 |
|
| 6 | have once [be] the [adj] [noun sg] | 8 |
|
