No | Pattern | Freq | Relations |
---|---|---|---|
1 | [prep] a [adv] long period | 44 | |
2 | [prep] a [adv] long period | 23 | |
3 | over a [adv] long period | 21 | |
4 | [prep] a [adv] longer period | 21 | |
5 | for a [adv] long period | 19 | |
6 | [prep] a much long period | 16 | |
7 | [prep] a much long period | 16 | |
8 | [prep] a very long period | 8 | |
9 | [prep] a very long period | 8 |