Split list into chunks by condition

Split list into chunks by condition

I have a list like:
["asdf-1-bhd","uuu-2-ggg","asdf-2-bhd","uuu-1-ggg","asdf-3-bhd"]
that I want to split into the two groups who's elements are equal after I
remove the number:
"asdf-1-bhd", "asdf-2-bhd", "asdf-3-bhd"
"uuu-2-ggg" , uuu-1-ggg"
I have been using itertools.groupby with
for key, group in itertools.groupby(elements, key= lambda x :
removeIndexNumber(x)):
but this does not work when the elements to be grouped are not consecutive.
I have thought about using list comprehensions, but this seems impossible
since the number of groups is not fixed.
tl;dr:
I want to group stuff, two problems:
I don't know the number of chunks I will obtain
I the elements that will be grouped into a chunk might not be consecutive