| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun sg] [prep] a [adj] period | 31 |
|
| 2 | a [noun sg] [prep] a fixed [noun sg] | 16 |
|
| 3 | a [noun sg] [prep] a fixed [noun] | 16 |
|
| 4 | [art] [noun sg] [prep] a fixed period | 12 |
|
| 5 | [art] [noun sg] [prep] a fixed period | 12 |
|
| 6 | a [noun sg] [prep] a fixed period | 6 |
|
| 7 | a [noun sg] [prep] a fixed period | 5 |
|
| 8 | a [noun sg] [prep] a fixed period | 5 |
|
| 9 | a [noun sg] [prep] a fixed period | 5 |
|
| 10 | a [noun] [prep] a fixed period | 5 |
|
| 11 | a [noun sg] [prep] [art] fixed period | 5 |
|
| 12 | a [noun sg] [prep] [art] fixed period | 5 |
|
