Maureen,
I have to add this also. I only collect these like I believe they were sold and do not combine the bases and the roofs in as many ways as possible.
If you would do this with for example the 8 french magazine cottages, It would be like this.
There are 8 different bases and 8 different roofs and 4 different butterflies.
This means that for each base there would be 8 possible roofs and for these 8 possible versions there would also be 4 different butterflies. This gives you 32 possible versions for each base and then there are 8 bases.
8*32 gives you 256 possible cottagevariations for only the ones sold for the french magazine.
Did I got that correct.
Off course I only count these as 8 cottages. And it is the same with the other. Correct roof to correct base.
/André