| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] a [adj] [prep] | 56 |
|
| 2 | [adv] a [adj] period [prep] | 53 |
|
| 3 | [vb past] a [adj] period [prep] | 43 |
|
| 4 | [vb past] [adv] a period [prep] | 23 |
|
| 5 | [vb past] [adv] a [adj] period | 18 |
|
