| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] over a period | 29 |
|
| 2 | up [prep] a period | 17 |
|
| 3 | [adv prt] for a period | 9 |
|
| 4 | out [prep] a period | 8 |
|
| 5 | back [prep] a period | 7 |
|
| 6 | on [prep] a period | 6 |
|
| 7 | in [prep] a period | 5 |
|
| 8 | off [prep] a period | 5 |
|
| 9 | [adv prt] to a period | 5 |
|
