| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb pp] [prep] a [adj] period | 22 |
|
| 2 | [adv] [vb pp] [prep] a [adj] period | 17 |
|
| 3 | [adv] [vb pp] [prep] a long period | 6 |
|
| 4 | [adv] [vb pp] within a [adj] period | 6 |
|
| 5 | [adv] [vb pp] within a [adj] period | 6 |
|
| 6 | [adv] [vb pp] for a [adj] period | 5 |
|
| 7 | not [vb pp] [prep] a [adj] period | 5 |
|
| 8 | not [vb pp] [prep] a [adj] period | 5 |
|
| 9 | [not/n't] [vb pp] [prep] a [adj] period | 5 |
|
| 10 | [adv] [vb pp] for a [adj] period | 5 |
|
