| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period [prep] [art] | 86 |
|
| 2 | [prep] a [adj] period [prep] [art] | 86 |
|
| 3 | for a [adj] period [prep] [art] | 32 |
|
| 4 | for a [adj] period [prep] [art] | 32 |
|
| 5 | over a [adj] period [prep] [art] | 16 |
|
| 6 | over a [adj] period [prep] [art] | 16 |
|
| 7 | [verb] a [adj] period [prep] [art] | 16 |
|
| 8 | [be] a [adj] period [prep] [art] | 14 |
|
| 9 | be a [adj] period [prep] [art] | 14 |
|
| 10 | was a [adj] period [prep] [art] | 6 |
|
| 11 | of a [adj] period [prep] [art] | 6 |
|
| 12 | within a [adj] period [prep] [art] | 6 |
|
| 13 | after a [adj] period [prep] [art] | 6 |
|
| 14 | after a [adj] period [prep] [art] | 6 |
|
| 15 | of a [adj] period [prep] [art] | 6 |
|
| 16 | [adv] a [adj] period [prep] [art] | 6 |
|
| 17 | [was/were] a [adj] period [prep] [art] | 6 |
|
| 18 | within a [adj] period [prep] [art] | 6 |
|
| 19 | [adv] a [adj] period [prep] [art] | 5 |
|
| 20 | [vb base] a [adj] period [prep] [art] | 5 |
|
| 21 | [be] a [adj] period [prep] [art] | 5 |
|
| 22 | be a [adj] period [prep] [art] | 5 |
|
| 23 | a [adv] [adj] period [prep] [art] | 12 |
|
| 24 | a [adv] [adj] period [prep] [art] | 12 |
|
| 25 | a [adj] [adj] period [prep] [art] | 8 |
|
| 26 | a [adj] [adj] period [prep] [art] | 7 |
|
| 27 | a [adj] [noun] period [prep] [art] | 23 |
|
| 28 | a [adj] [noun sg] period [prep] [art] | 23 |
|
| 29 | a [adj] [adj] period [prep] [art] | 8 |
|
| 30 | a [adj] year period [prep] [art] | 8 |
|
