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