Your goal is to find the secret four-color code. The following colors are possible: white, blue, red, purple, yellow, black.
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: ['yellow', 'red', 'purple', 'blue']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['white', 'white', 'red', 'yellow']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['red', 'yellow', 'blue', 'black']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['blue', 'black', 'white', 'red']. Hint: three colors are in the secret code but in the wrong positions.
A B C D
blue, white, purple, yellow black, blue, yellow, white yellow, purple, white, red red, white, black, red