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