Most likely the designers of the game recognized that everyone taps on the cards when getting new choices in a particular order, producing patterns of their own. As an outcome, they presented the "concealed Pattern" mechanic in the game. There is no information today on what the pattern is and I am not totally sure I have actually missed it by tapping a button without reading, or if you need to entirely think it. If it's the latter, it's practically difficult to get it, however if it's the previous-- just watch on the pattern and ensure to follow it perfectly in order to increase your reward. Tip: take a screenshot of your screen if it's revealed to you, to ensure you do not get anything incorrect.