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