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