Merging cells with same parent.
 

Hi,

I have three columns.
Column 1 has family-numbers (sorted ascending).
Column 2 has row-numbers (starting with 1 at the first instance of a new
family)
Column 3 has text.

Example:
FAM Row Text
1 1 These lines
1 2 belong to
1 3 eachother.
2 1 Do you want a
2 2 peanutbutter sandwich?
3 1 My daddy
3 2 lives in
3 3 a great big
3 4 block of flats.

As you can see there is no fixed number of texts belonging to any family.

Now I want something that merges for each family it's child-texts together,
separated by a space, and after that, delete the duplicate family rows.

Looking forward to your reply.