| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the [noun sg] [prep] a [adj] period | 90 |
|
| 2 | [art] [noun sg] for a [adj] period | 55 |
|
| 3 | a [noun sg] [prep] a [adj] period | 29 |
|
| 4 | [art] [noun sg] of a [adj] period | 28 |
|
| 5 | [art] [noun sg] [prep] a long period | 23 |
|
| 6 | [art] [noun sg] over a [adj] period | 18 |
|
| 7 | [art] [noun sg] [prep] a fixed period | 12 |
|
| 8 | [art] [noun sg] [prep] a short period | 10 |
|
| 9 | an [noun sg] [prep] a [adj] period | 9 |
|
| 10 | [art] [noun sg] within a [adj] period | 8 |
|
| 11 | [art] end [prep] a [adj] period | 7 |
|
| 12 | [art] [noun sg] in a [adj] period | 6 |
|
| 13 | [art] [noun sg] [prep] a specified period | 5 |
|
