| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [adj] year period | 71 |
|
| 2 | over a [num] year period | 71 |
|
| 3 | [prep] a ten year period | 8 |
|
| 4 | [prep] a ten year period | 8 |
|
| 5 | over [art] ten year period | 7 |
|
| 6 | over a ten [noun sg] period | 5 |
|
| 7 | over a ten year period | 5 |
|
| 8 | over a ten [noun] period | 5 |
|
| 9 | over a ten year period | 5 |
|
| 10 | over a ten year [noun sg] | 5 |
|
| 11 | over a ten year period | 5 |
|
| 12 | over a ten year [noun] | 5 |
|
| 13 | over a ten year period | 5 |
|
