It's just a matter of correlating them. From right to left, buttons 1 (Heart) and 2 (Diamond) are the right side. 3 (Club) and 4 (Spade) are the left side. 1 and 3 are the bottom floor, 2 and 4 are the top floor. It does look weird in retrospect because why are the buttons for the right side on the left and vice versa.