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