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