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