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