| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [Wh det] have once [vb pp] [prep] | 9 |
|
| 2 | [noun sg] [Wh det] have once [vb pp] [prep] | 6 |
|
| 3 | [Wh det] have once [be] [vb pp] [prep] | 8 |
|
| 4 | [Wh det] have once been [vb pp] [prep] | 8 |
|
| 5 | [Wh det] have once be [vb pp] [prep] | 8 |
|
| 6 | [Wh det] have once [been] [vb pp] [prep] | 8 |
|
| 7 | [Wh det] have once [vb pp] [prep] [noun] | 6 |
|
| 8 | [Wh det] have once [vb pp] [prep] [noun prp] | 5 |
|
