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