No | Pattern | Freq | Relations |
---|---|---|---|
1 | be [vb pp] over a long period | 22 | |
2 | [be] [vb pp] over a long period | 14 | |
3 | be [vb pp] over a long period | 10 | |
4 | [be] [vb pp] over a long period | 10 | |
5 | [be] [vb pp] over a longer period | 8 | |
6 | [been] [vb pp] over a long period | 5 | |
7 | been [vb pp] over a long period | 5 |