Not a good puzzle. The final shapes of the blobs are ambiguous and there's no clue to good clue within the puzzle to guess them.

Here's the hint: the blobs are squares, slightly rotated left.

That was brutal.

Tough guesswork at the very end. I guess there are only so many possibilities though.

:T.

It's very easy. Logic...

No logic at all... There are nine rectangles with two possible shapes each, which means some 512 solutions :(

Thank you, Anita.