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