No | Pattern | Freq | Relations |
---|---|---|---|
1 | [adv] long period [prep] | 24 | |
2 | [adv] long period [prep] | 24 | |
3 | [adv] long period of | 21 | |
4 | [adv] long period of | 21 | |
5 | very long period [prep] | 10 | |
6 | very long period [prep] | 10 | |
7 | relatively long period [prep] | 5 | |
8 | relatively long period [prep] | 5 |