Looking on the internet deeply has found these results:

another group within a group is the most popular phrase on the web.

another group among a group 10 results on the web	another group within a group 166 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Mar 1, 2008 ... group to prepare them for the fact that, especially if they get a full another group within a group, prepare them for the fact that there are going to�... Mar 1, 2011 ... ... group is compared to another group. Within a group, all those factors that lead members to categorize themselves as different and endowed�... Dec 8, 2015 ... Or is this just another 'group within a group' (rather like Momentum, say)? Anyway , the letter outlines what they stand for, which, on a quick�... another group. Within a group, all those factors that lead members to categorize themselves as different and endowed with special characteristics and traits are�...

another group among a group

10 results on the web

another group within a group

166 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Mar 1, 2008 ... group to prepare them for the fact that, especially if they get a full another group within a group, prepare them for the fact that there are going to�...
Mar 1, 2011 ... ... group is compared to another group. Within a group, all those factors that lead members to categorize themselves as different and endowed�...
Dec 8, 2015 ... Or is this just another 'group within a group' (rather like Momentum, say)? Anyway , the letter outlines what they stand for, which, on a quick�...
another group. Within a group, all those factors that lead members to categorize themselves as different and endowed with special characteristics and traits are�...