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