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