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