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