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