431. Dominoes in a rectangle

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Shown above are 5 domino tiles placed in such a way that it forms a big rectangle.

In how many different ways can you fit the 5 domino tiles into the big rectangle? You may only move the matchsticks on the inside of the big rectangle.

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There are 8 ways to fit the domino tiles into the big rectangle.

Solutions A, B and C: 1 vertical- and 4 horizontal domino tiles.
Solutions D, E, F and G: 3 vertical and 2 horizontal domino tiles.
Solution H: 5 vertical domino tiles.

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