No | Pattern | Freq | Relations |
---|---|---|---|
1 | have [vb pp] [prep] a long period | 15 | |
2 | have [vb pp] [prep] a long period | 15 | |
3 | have [vb pp] [prep] a long period | 15 | |
4 | have [vb pp] over a long period | 12 | |
5 | have [vb pp] over a long period | 12 | |
6 | has [vb pp] [prep] a long period | 6 |