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