No | Pattern | Freq | Relations |
---|---|---|---|
1 | [noun sg] [vb mod] [verb] [prep] a time | 10 | |
2 | [noun sg] [modal v] [verb] [prep] a time | 10 | |
3 | [noun sg] [modal v] [vb infin] [prep] a time | 10 | |
4 | [noun sg] [modal v] [verb] at a time | 6 | |
5 | [noun sg] [modal v] [verb] at a time | 6 |