| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period | 1796 |
|
| 2 | [prep] a [adj] period | 1646 |
|
| 3 | [prep] a 24-hour [noun] | 45 |
|
| 4 | [prep] [art] 24-hour period | 18 |
|
| 5 | [prep] [art] 24-hour period | 18 |
|
| 6 | [prep] a 24-hour period | 13 |
|
| 7 | [prep] a 24-hour period | 13 |
|
| 8 | [prep] a 24-hour period | 13 |
|
