No | Pattern | Freq | Relations |
---|---|---|---|
1 | [be] [adv] [prep] a [adj] time | 82 | |
2 | [be] [adv] [prep] a certain [noun sg] | 10 | |
3 | [be] [adv] [prep] a certain [noun] | 10 | |
4 | [be] [adv] [prep] a certain time | 7 | |
5 | [be] [adv] [prep] a certain time | 7 | |
6 | [be] [adv] [prep] [art] certain time | 7 | |
7 | [be] [adv] [prep] [art] certain time | 7 |