No | Pattern | Freq | Relations |
---|---|---|---|
1 | over a [adj] period [prep] [adj] | 12 | |
2 | over a [adj] period [prep] [adj] | 12 | |
3 | over a [adj] period [prep] [adj] | 11 | |
4 | over a [adj] period [prep] [num] | 10 | |
5 | over a [adj] period of [adj] | 6 | |
6 | over a [adj] period of [adj] | 6 |