| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [modal v] [vb infin] at a [noun] | 65 |
|
| 2 | [noun] [modal v] [vb infin] at a [noun sg] | 63 |
|
| 3 | [noun] [modal v] [vb infin] at [art] time | 16 |
|
| 4 | [noun] [modal v] [vb infin] at [art] time | 16 |
|
| 5 | [noun] [modal v] [vb infin] [prep] a time | 12 |
|
| 6 | [noun] [modal v] [vb infin] [prep] a time | 12 |
|
| 7 | [noun] [modal v] [vb infin] at a time | 6 |
|
| 8 | [noun] [modal v] [vb infin] at a time | 6 |
|
| 9 | [noun] [modal v] [verb] at a time | 6 |
|
| 10 | [noun] [modal v] [vb infin] at a time | 6 |
|
