| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [verb] [adv] a [adj] period | 7 |
|
| 2 | [conj] [adv] [prep] a [adj] period | 16 |
|
| 3 | [conj] [adv] [prep] a [adj] period | 16 |
|
| 4 | [conj] [adv] for a [adj] period | 11 |
|
| 5 | [conj] [adv] for a [adj] period | 11 |
|
