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