| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] 24-hour period | 18 |
|
| 2 | [prep] [art] 24-hour period | 17 |
|
| 3 | [prep] a 24-hour period | 13 |
|
| 4 | [prep] a 24-hour period | 13 |
|
| 5 | over [art] 24-hour period | 7 |
|
| 6 | [prep] the 24-hour period | 5 |
|
| 7 | [prep] the 24-hour period | 5 |
|
