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