| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv prt] a period [prep] | 65 |
|
| 2 | [verb] [adv prt] a long period | 28 |
|
| 3 | [verb] a long period [prep] | 19 |
|
| 4 | [adv prt] a long period [prep] | 9 |
|
