| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [modal v] [verb] [prep] a time | 10 |
|
| 2 | [noun sg] [modal v] [verb] [prep] a time | 10 |
|
| 3 | [noun sg] [modal v] [verb] at a time | 6 |
|
| 4 | [noun sg] [modal v] [verb] at a time | 6 |
|
| 5 | [noun sg] [modal v] [verb] a [adj] time | 32 |
|
| 6 | [noun sg] [modal v] [verb] a [adj] time | 28 |
|
| 7 | [noun sg] [modal v] [verb] a long time | 18 |
|
| 8 | [noun sg] [modal v] [verb] a long time | 18 |
|
