| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [conj] a period | 20 |
|
| 2 | [noun sg] [conj] a period | 15 |
|
| 3 | [verb] [conj] a period | 10 |
|
| 4 | [adj] [conj] a period | 10 |
|
| 5 | [num] [conj] a period | 8 |
|
| 6 | [conj] [prep] a period | 76 |
|
| 7 | [conj] [prep] a period | 76 |
|
| 8 | [conj] over a period | 29 |
|
| 9 | [conj] over a period | 29 |
|
| 10 | [conj] [verb] a period | 26 |
|
| 11 | [conj] for a period | 22 |
|
| 12 | [conj] for a period | 22 |
|
| 13 | [conj] after a period | 11 |
|
| 14 | [conj] after a period | 11 |
|
| 15 | [conj] in a period | 9 |
|
| 16 | [conj] in a period | 9 |
|
| 17 | [conj] [v-ing] a period | 8 |
|
| 18 | [conj] [vb past] a period | 6 |
|
| 19 | [conj] [adv] a period | 5 |
|
| 20 | [conj] [adv] a period | 5 |
|
| 21 | [conj] [vb base] a period | 5 |
|
| 22 | [conj] a [adj] period | 77 |
|
| 23 | [conj] a [adj] period | 63 |
|
| 24 | [conj] a long period | 12 |
|
| 25 | [conj] a [adj -er] period | 12 |
|
| 26 | [conj] a short period | 10 |
|
| 27 | [conj] a [noun] period | 9 |
|
| 28 | [conj] a short period | 9 |
|
| 29 | [conj] a [noun sg] period | 9 |
|
| 30 | [conj] a longer period | 7 |
|
