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