No | Pattern | Freq | Relations |
---|---|---|---|
1 | over a [adj] period [modal v] | 10 | |
2 | over a long [noun sg] [modal v] | 6 | |
3 | [prep] a long period [modal v] | 6 | |
4 | [prep] a long period [modal v] | 6 | |
5 | over a long [noun] [modal v] | 6 | |
6 | over a long period [modal v] | 5 | |
7 | over [art] long period [modal v] | 5 | |
8 | over a long period [modal v] | 5 |