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