If \(\alpha<\beta\), how many different values are there among the following expressions? \[\sin\alpha\sin\beta \quad \sin\alpha\cos\beta \quad \cos\alpha\sin\beta \quad \cos\alpha\cos\beta\]

If \(\alpha<\beta\), how many different values are there among the following expressions? \[\sin\alpha\sin\beta \quad \sin\alpha\cos\beta \quad \cos\alpha\sin\beta \quad \cos\alpha\cos\beta\]