| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] [noun pl] [prep] [art] [adj] period | 35 |
|
| 2 | [num] [noun] [prep] the [adj] period | 22 |
|
| 3 | [num] [noun] [prep] a [adj] period | 21 |
|
| 4 | [num] [noun] over [art] [adj] period | 16 |
|
| 5 | [num] [noun] in [art] [adj] period | 7 |
|
| 6 | [num] [noun sg] [prep] [art] [adj] period | 6 |
|
| 7 | [num] year [prep] [art] [adj] period | 6 |
|
| 8 | [num] years [prep] [art] [adj] period | 6 |
|
| 9 | [num] [noun] [prep] [art] five-year period | 5 |
|
