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