No | Pattern | Freq | Relations |
---|---|---|---|
1 | be [prep] once [vb pp] | 39 | |
2 | [be] [prep] once [vb pp] | 39 | |
3 | [be] at once [vb pp] | 36 | |
4 | [was/were] [prep] once [vb pp] | 28 | |
5 | was [prep] once [vb pp] | 23 | |
6 | [is] [prep] once [vb pp] | 7 | |
7 | is [prep] once [vb pp] | 7 | |
8 | were [prep] once [vb pp] | 5 |