No | Pattern | Freq | Relations |
---|---|---|---|
1 | [prep] [art] longer period of | 12 | |
2 | [prep] a longer period of | 12 | |
3 | [prep] a longer period of | 12 | |
4 | [prep] [art] longer period of | 12 | |
5 | [prep] longer period of time | 7 | |
6 | [prep] longer period of [noun] | 7 | |
7 | [prep] longer period of time | 7 | |
8 | [prep] longer period of [noun sg] | 7 |