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