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