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