No | Pattern | Freq | Relations |
---|---|---|---|
1 | over a period [prep] [art] [adj] | 13 | |
2 | over a period [prep] a [adj] | 12 | |
3 | over a period [prep] a [adj] | 12 | |
4 | over a period of [art] [adj] | 12 | |
5 | over a period [prep] [art] few | 11 | |
6 | over a period [prep] [art] [det] | 11 | |
7 | over a period [prep] [art] few | 11 |