No | Pattern | Freq | Relations |
---|---|---|---|
1 | [prep] a period of | 1599 | |
2 | [prep] a period of | 1599 | |
3 | over a [noun] of | 1136 | |
4 | over [art] period of | 686 | |
5 | over [art] period of | 686 | |
6 | over a period [prep] | 628 | |
7 | over a period [prep] | 628 | |
8 | over a period of | 618 | |
9 | over a period of | 617 | |
10 | over a period of | 617 |