result grouping and paging, solr 4.21

[Gunnar]

Hello,

I'm trying to page results with grouping /field collapsing. My query is:
?q=myKeywords&start=0&rows=100&group=true&group.field=myGroupField&group.format=simple&group.limit=1

The result will contain 70 groups, is there a way to get 100 records 
returned, means 70 from each group first doc and second docs
from the first 30 groups?

Thanks,

Gunnar