| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [verb] [adv] a period | 8 |
|
| 2 | [conj] [vb past] [adv] a period | 5 |
|
| 3 | [conj] [adv] [prep] a period | 12 |
|
| 4 | [conj] [adv] [prep] a period | 12 |
|
| 5 | [conj] [adv] over a period | 5 |
|
| 6 | [conj] [adv] over a period | 5 |
|
| 7 | [conj] [adv] a [adj] period | 5 |
|
| 8 | [conj] [adv] a [adj] period | 5 |
|
| 9 | [conj] [adv] a period of | 5 |
|
| 10 | [conj] [adv] a period of | 5 |
|
| 11 | [conj] [adv] a period [prep] | 5 |
|
| 12 | [conj] [adv] a period [prep] | 5 |
|
