No | Pattern | Freq | Relations |
---|---|---|---|
1 | [prep] a [adj] period [conj] | 138 | |
2 | [prep] a longer [noun sg] [conj] | 32 | |
3 | [prep] a longer [noun] [conj] | 32 | |
4 | [prep] a long period [conj] | 28 | |
5 | [prep] a [adj -er] period [conj] | 27 | |
6 | [prep] a longer period [conj] | 15 | |
7 | [prep] a longer period [conj] | 15 | |
8 | [prep] [art] longer period [conj] | 15 |