Your goal is to find the secret four-color code. The following colors are possible: blue, red, purple, black, white, yellow.
Some guesses have already been made. I will provide feedback for each guess made with which it is possible to unambigiously determine the secret code.

Previous Guesses:
Guess: ['white', 'purple', 'yellow', 'red']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['blue', 'blue', 'purple', 'white']. Hint: one color is in the secret code but in the wrong position.
Guess: ['purple', 'black', 'white', 'black']. Hint: one color is in the secret code but in the wrong position.
Guess: ['blue', 'yellow', 'red', 'blue']. Hint: three colors are in the secret code but in the wrong positions.
A B C D
yellow, blue, yellow, blue purple, red, black, yellow red, yellow, black, yellow black, red, blue, yellow