No | Pattern | Freq | Relations |
---|---|---|---|
1 | [vb mod] [be] [vb pp] [prep] a period | 31 | |
2 | [modal v] be [vb pp] [prep] a period | 31 | |
3 | [modal v] [be] [vb pp] for a period | 10 | |
4 | [modal v] [be] [vb pp] over a period | 7 | |
5 | could [be] [vb pp] [prep] a period | 6 | |
6 | could [be] [vb pp] [prep] a period | 6 | |
7 | [modal v] [be] [vb pp] as a period | 5 | |
8 | can [be] [vb pp] [prep] a period | 5 | |
9 | can [be] [vb pp] [prep] a period | 5 |