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