| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] once [been] a [noun] | 54 |
|
| 2 | have once [been] a [noun] | 54 |
|
| 3 | [vb past] once [been] a [noun] | 52 |
|
| 4 | had once [been] a [noun] | 51 |
|
| 5 | once [verb] [been] a [noun] | 10 |
|
| 6 | once have [been] a [noun] | 10 |
|
| 7 | once have [been] a [noun] | 8 |
|
| 8 | once [vb infin] [been] a [noun] | 8 |
|
| 9 | once [been] a [adj] [noun] | 25 |
|
| 10 | once [been] a [adj] [noun] | 25 |
|
| 11 | once [been] a [noun] [noun] | 6 |
|
| 12 | once [been] a [noun sg] [noun] | 6 |
|
| 13 | once [been] a [noun] [prep] | 22 |
|
| 14 | once [been] a [noun] [prep] | 22 |
|
| 15 | once [been] a [noun] of | 14 |
|
| 16 | once [been] a [noun] of | 14 |
|
| 17 | once [been] a [noun] [noun sg] | 6 |
|
| 18 | once [been] a [noun] [noun] | 6 |
|
| 19 | once [been] a [noun] [coord] | 5 |
|
| 20 | once [been] a [noun] and | 5 |
|
| 21 | once [been] a [noun] and | 5 |
|
| 22 | once [been] a [noun] [conj] | 5 |
|
