No | Pattern | Freq | Relations |
---|---|---|---|
1 | [be] [vb pp] [prep] a [adj] period | 70 | |
2 | [be] [vb pp] [prep] a long [noun] | 53 | |
3 | [be] [vb pp] [prep] a long period | 34 | |
4 | [be] [vb pp] [prep] [art] long period | 15 | |
5 | [be] [vb pp] [prep] [art] long period | 15 | |
6 | [be] [vb pp] [prep] a long period | 14 | |
7 | [be] [vb pp] [prep] a long period | 14 | |
8 | [be] [verb] [prep] a long period | 14 |