| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | extend [adv prt] [art] period | 5 |
|
| 2 | extend over [art] period | 5 |
|
| 3 | extend over [art] period | 5 |
|
| 4 | extend [adv] a period | 5 |
|
| 5 | extend [adv] a period | 5 |
|
| 6 | extend [adv] [art] period | 5 |
|
| 7 | extend [adv] [art] period | 5 |
|
