| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [adj] [noun sg] period | 144 |
|
| 2 | over a [num] [noun sg] period | 133 |
|
| 3 | [prep] a ten [noun sg] period | 8 |
|
| 4 | [prep] a ten [noun sg] period | 8 |
|
| 5 | over [art] ten [noun sg] period | 7 |
|
| 6 | over a ten [noun] period | 5 |
|
| 7 | over a ten [noun sg] period | 5 |
|
| 8 | over a ten [noun sg] [noun] | 5 |
|
| 9 | over a ten [noun sg] period | 5 |
|
| 10 | over a ten [noun sg] period | 5 |
|
| 11 | over a ten [noun sg] [noun sg] | 5 |
|
