| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [num] [noun sg] period | 132 |
|
| 2 | over a [adj] year period | 71 |
|
| 3 | over a [adj] month period | 25 |
|
| 4 | over a three [noun sg] period | 21 |
|
| 5 | over a three [noun sg] period | 21 |
|
| 6 | over a five [noun sg] period | 17 |
|
| 7 | over a two [noun sg] period | 17 |
|
| 8 | over a five [noun sg] period | 17 |
|
| 9 | over a two [noun sg] period | 17 |
|
| 10 | over a [adj] day period | 14 |
|
| 11 | over a [adj] week period | 13 |
|
| 12 | over a six [noun sg] period | 11 |
|
| 13 | over a six [noun sg] period | 11 |
|
| 14 | over a one [noun sg] period | 8 |
|
| 15 | over a one [noun sg] period | 8 |
|
| 16 | over a four [noun sg] period | 8 |
|
| 17 | over a [adj] hour period | 8 |
|
| 18 | over a four [noun sg] period | 8 |
|
| 19 | over a [adj] [noun sg] period | 7 |
|
| 20 | over a [adj] time period | 7 |
|
| 21 | over a 10 [noun sg] period | 6 |
|
| 22 | over a 10 [noun sg] period | 6 |
|
| 23 | over a ten [noun sg] period | 5 |
|
| 24 | over a ten [noun sg] period | 5 |
|
